diff --git a/docs/source/tutorial.ipynb b/docs/source/tutorial.ipynb
index 5e4fc8d..92db2a9 100644
--- a/docs/source/tutorial.ipynb
+++ b/docs/source/tutorial.ipynb
@@ -118,7 +118,7 @@
      "data": {
       "text/html": [
        "\n",
-       "<div class=\"result-container\" id=\"result-139797112623504rr98\">\n",
+       "<div class=\"result-container\" id=\"result-139806133663008rr8\">\n",
        "    <div class=\"result-css\">\n",
        "        <style>\n",
        "            .observed {\n",
@@ -178,9 +178,11 @@
        "            </tbody>\n",
        "        </table>\n",
        "        <div class=\"\">\n",
-       "            <a onclick=\"return showRaw139797112623504rr98();\" href=\"#\">Show/Hide Raw</a>\n",
+       "            <a onclick=\"return showRaw139806133663008rr8();\" href=\"#\">\n",
+       "                Show/Hide Raw\n",
+       "            </a>\n",
        "            <div class=\"result-raw\">\n",
-       "                <code id=\"result-code-139797112623504rr98\" class=\"hidden\">\n",
+       "                <code id=\"result-code-139806133663008rr8\" class=\"hidden\">\n",
        "{\n",
        "  \"message\": \"Success\",\n",
        "  \"RA\": 187.7891703346409,\n",
@@ -202,9 +204,9 @@
        "    </div>\n",
        "    <div class=\"result-js\">\n",
        "        <script>\n",
-       "            function showRaw139797112623504rr98(){\n",
+       "            function showRaw139806133663008rr8(){\n",
        "                var showed = document.getElementById(\n",
-       "                    \"result-code-139797112623504rr98\"\n",
+       "                    \"result-code-139806133663008rr8\"\n",
        "                ).classList.toggle(\"hidden\");\n",
        "                return false;\n",
        "            }\n",
@@ -357,7 +359,7 @@
      "data": {
       "text/html": [
        "\n",
-       "<div class=\"result-container\" id=\"result-139797109936032rr9\">\n",
+       "<div class=\"result-container\" id=\"result-139806133663872rr61\">\n",
        "    <div class=\"result-css\">\n",
        "        <style>\n",
        "            .observed {\n",
@@ -417,9 +419,11 @@
        "            </tbody>\n",
        "        </table>\n",
        "        <div class=\"\">\n",
-       "            <a onclick=\"return showRaw139797109936032rr9();\" href=\"#\">Show/Hide Raw</a>\n",
+       "            <a onclick=\"return showRaw139806133663872rr61();\" href=\"#\">\n",
+       "                Show/Hide Raw\n",
+       "            </a>\n",
        "            <div class=\"result-raw\">\n",
-       "                <code id=\"result-code-139797109936032rr9\" class=\"hidden\">\n",
+       "                <code id=\"result-code-139806133663872rr61\" class=\"hidden\">\n",
        "{\n",
        "  \"message\": \"Success\",\n",
        "  \"RA\": 187.7891703346409,\n",
@@ -439,9 +443,9 @@
        "    </div>\n",
        "    <div class=\"result-js\">\n",
        "        <script>\n",
-       "            function showRaw139797109936032rr9(){\n",
+       "            function showRaw139806133663872rr61(){\n",
        "                var showed = document.getElementById(\n",
-       "                    \"result-code-139797109936032rr9\"\n",
+       "                    \"result-code-139806133663872rr61\"\n",
        "                ).classList.toggle(\"hidden\");\n",
        "                return false;\n",
        "            }\n",
@@ -521,7 +525,7 @@
      "data": {
       "text/html": [
        "\n",
-       "<div class=\"result-container\" id=\"result-139797109544272rr33\">\n",
+       "<div class=\"result-container\" id=\"result-139806130604352rr89\">\n",
        "    <div class=\"result-css\">\n",
        "        <style>\n",
        "            .observed {\n",
@@ -595,9 +599,11 @@
        "            </tbody>\n",
        "        </table>\n",
        "        <div class=\"\">\n",
-       "            <a onclick=\"return showRaw139797109544272rr33();\" href=\"#\">Show/Hide Raw</a>\n",
+       "            <a onclick=\"return showRaw139806130604352rr89();\" href=\"#\">\n",
+       "                Show/Hide Raw\n",
+       "            </a>\n",
        "            <div class=\"result-raw\">\n",
-       "                <code id=\"result-code-139797109544272rr33\" class=\"hidden\">\n",
+       "                <code id=\"result-code-139806130604352rr89\" class=\"hidden\">\n",
        "{\n",
        "  \"message\": \"Success\",\n",
        "  \"RA\": 187.66534187250852,\n",
@@ -625,9 +631,9 @@
        "    </div>\n",
        "    <div class=\"result-js\">\n",
        "        <script>\n",
-       "            function showRaw139797109544272rr33(){\n",
+       "            function showRaw139806130604352rr89(){\n",
        "                var showed = document.getElementById(\n",
-       "                    \"result-code-139797109544272rr33\"\n",
+       "                    \"result-code-139806130604352rr89\"\n",
        "                ).classList.toggle(\"hidden\");\n",
        "                return false;\n",
        "            }\n",
@@ -712,6 +718,158 @@
     "> Note: The NAM client also has the *adjusted_* values but all are `None`."
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 4: How to obtain radial velocity for a given distance with CF3"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 16,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "\n",
+       "<div class=\"result-container\" id=\"result-139806105258928rr08\">\n",
+       "    <div class=\"result-css\">\n",
+       "        <style>\n",
+       "            .observed {\n",
+       "                color: #dc3545! important;\n",
+       "            }\n",
+       "\n",
+       "            .adjusted {\n",
+       "                color: #28a745!important;\n",
+       "            }\n",
+       "\n",
+       "\n",
+       "            tablr.result-table, div.result-raw {\n",
+       "                width: 100%;\n",
+       "            }\n",
+       "\n",
+       "            table.result-table tr{\n",
+       "                 pointer-events: none;\n",
+       "                 background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container code{\n",
+       "                color: #e83e8c;\n",
+       "                background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container .hidden {\n",
+       "                display: none;\n",
+       "            }\n",
+       "\n",
+       "            div.result-raw {\n",
+       "                background-color: #333 !important;\n",
+       "            }\n",
+       "        </style>\n",
+       "    </div>\n",
+       "    <div class=\"result-container container-fluid\">\n",
+       "        <table class=\"result-table\">\n",
+       "            <thead>\n",
+       "                <th colspan=3>\n",
+       "                    Result - <small><code>CF3(distance=180, ra=187, dec=13)</code></small>\n",
+       "                </th>\n",
+       "            </thead>\n",
+       "            <tbody>\n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"observed\">Observed</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12515.699706446017\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"adjusted\">Adjusted</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12940.58481990226\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "            </tbody>\n",
+       "        </table>\n",
+       "        <div class=\"\">\n",
+       "            <a onclick=\"return showRaw139806105258928rr08();\" href=\"#\">\n",
+       "                Show/Hide Raw\n",
+       "            </a>\n",
+       "            <div class=\"result-raw\">\n",
+       "                <code id=\"result-code-139806105258928rr08\" class=\"hidden\">\n",
+       "{\n",
+       "  \"message\": \"Success\",\n",
+       "  \"RA\": 186.99999497668534,\n",
+       "  \"Dec\": 13.000001835269385,\n",
+       "  \"Glon\": 280.56811463100814,\n",
+       "  \"Glat\": 74.84475460794316,\n",
+       "  \"SGL\": 102.09834270874016,\n",
+       "  \"SGB\": -2.8320379440905414,\n",
+       "  \"observed\": {\n",
+       "    \"velocity\": 12515.699706446017,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  },\n",
+       "  \"adjusted\": {\n",
+       "    \"velocity\": 12940.58481990226,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  }\n",
+       "}\n",
+       "                </code>\n",
+       "            </div>\n",
+       "        </div>\n",
+       "    </div>\n",
+       "    <div class=\"result-js\">\n",
+       "        <script>\n",
+       "            function showRaw139806105258928rr08(){\n",
+       "                var showed = document.getElementById(\n",
+       "                    \"result-code-139806105258928rr08\"\n",
+       "                ).classList.toggle(\"hidden\");\n",
+       "                return false;\n",
+       "            }\n",
+       "        </script>\n",
+       "    </div>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "Result - CF3(distance=180, ra=187, dec=13)\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Observed | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12515.699706446017 |\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Adjusted | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12940.58481990226  |\n",
+       "+----------+-----------------+--------------------+"
+      ]
+     },
+     "execution_count": 16,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "cf3.calculate_velocity(distance=180, ra=187, dec=13)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -725,12 +883,14 @@
    "source": [
     "## PyCF3 Cache system\n",
     "\n",
-    "By default any `pycf3.CF3` instance is created with a cache that prevent to send two times the same request to the server. For example: lets make two times the same request with time measurement"
+    "By default any any client instance is created with a cache that prevent to send two times the same request to the server. For example: lets make two times the same request and meassure the time to end the calculation.\n",
+    "\n",
+    "> Note: We are using the `pycf3.CF3` client as an example, but any other `pycf3` calculator has the same functionalities."
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 17,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -739,11 +899,22 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 18,
    "metadata": {
     "nbsphinx": "hidden"
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "19"
+      ]
+     },
+     "execution_count": 18,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "## this cell is hidden in sphinx (see the cell metadata)\n",
     "cf3.cache.clear()"
@@ -751,41 +922,473 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 19,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "CPU times: user 36 µs, sys: 9.57 ms, total: 9.61 ms\n",
+      "Wall time: 11.9 s\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "\n",
+       "<div class=\"result-container\" id=\"result-139806113095104rr06\">\n",
+       "    <div class=\"result-css\">\n",
+       "        <style>\n",
+       "            .observed {\n",
+       "                color: #dc3545! important;\n",
+       "            }\n",
+       "\n",
+       "            .adjusted {\n",
+       "                color: #28a745!important;\n",
+       "            }\n",
+       "\n",
+       "\n",
+       "            tablr.result-table, div.result-raw {\n",
+       "                width: 100%;\n",
+       "            }\n",
+       "\n",
+       "            table.result-table tr{\n",
+       "                 pointer-events: none;\n",
+       "                 background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container code{\n",
+       "                color: #e83e8c;\n",
+       "                background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container .hidden {\n",
+       "                display: none;\n",
+       "            }\n",
+       "\n",
+       "            div.result-raw {\n",
+       "                background-color: #333 !important;\n",
+       "            }\n",
+       "        </style>\n",
+       "    </div>\n",
+       "    <div class=\"result-container container-fluid\">\n",
+       "        <table class=\"result-table\">\n",
+       "            <thead>\n",
+       "                <th colspan=3>\n",
+       "                    Result - <small><code>CF3(distance=180, ra=187, dec=13)</code></small>\n",
+       "                </th>\n",
+       "            </thead>\n",
+       "            <tbody>\n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"observed\">Observed</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12515.699706446017\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"adjusted\">Adjusted</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12940.58481990226\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "            </tbody>\n",
+       "        </table>\n",
+       "        <div class=\"\">\n",
+       "            <a onclick=\"return showRaw139806113095104rr06();\" href=\"#\">\n",
+       "                Show/Hide Raw\n",
+       "            </a>\n",
+       "            <div class=\"result-raw\">\n",
+       "                <code id=\"result-code-139806113095104rr06\" class=\"hidden\">\n",
+       "{\n",
+       "  \"message\": \"Success\",\n",
+       "  \"RA\": 186.99999497668534,\n",
+       "  \"Dec\": 13.000001835269385,\n",
+       "  \"Glon\": 280.56811463100814,\n",
+       "  \"Glat\": 74.84475460794316,\n",
+       "  \"SGL\": 102.09834270874016,\n",
+       "  \"SGB\": -2.8320379440905414,\n",
+       "  \"observed\": {\n",
+       "    \"velocity\": 12515.699706446017,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  },\n",
+       "  \"adjusted\": {\n",
+       "    \"velocity\": 12940.58481990226,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  }\n",
+       "}\n",
+       "                </code>\n",
+       "            </div>\n",
+       "        </div>\n",
+       "    </div>\n",
+       "    <div class=\"result-js\">\n",
+       "        <script>\n",
+       "            function showRaw139806113095104rr06(){\n",
+       "                var showed = document.getElementById(\n",
+       "                    \"result-code-139806113095104rr06\"\n",
+       "                ).classList.toggle(\"hidden\");\n",
+       "                return false;\n",
+       "            }\n",
+       "        </script>\n",
+       "    </div>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "Result - CF3(distance=180, ra=187, dec=13)\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Observed | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12515.699706446017 |\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Adjusted | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12940.58481990226  |\n",
+       "+----------+-----------------+--------------------+"
+      ]
+     },
+     "execution_count": 19,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "%%time\n",
-    "cf3.equatorial_search()"
+    "cf3.calculate_velocity(distance=180, ra=187, dec=13)"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 20,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "CPU times: user 1.4 ms, sys: 471 µs, total: 1.87 ms\n",
+      "Wall time: 1.25 ms\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "\n",
+       "<div class=\"result-container\" id=\"result-139806107928992rr14\">\n",
+       "    <div class=\"result-css\">\n",
+       "        <style>\n",
+       "            .observed {\n",
+       "                color: #dc3545! important;\n",
+       "            }\n",
+       "\n",
+       "            .adjusted {\n",
+       "                color: #28a745!important;\n",
+       "            }\n",
+       "\n",
+       "\n",
+       "            tablr.result-table, div.result-raw {\n",
+       "                width: 100%;\n",
+       "            }\n",
+       "\n",
+       "            table.result-table tr{\n",
+       "                 pointer-events: none;\n",
+       "                 background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container code{\n",
+       "                color: #e83e8c;\n",
+       "                background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container .hidden {\n",
+       "                display: none;\n",
+       "            }\n",
+       "\n",
+       "            div.result-raw {\n",
+       "                background-color: #333 !important;\n",
+       "            }\n",
+       "        </style>\n",
+       "    </div>\n",
+       "    <div class=\"result-container container-fluid\">\n",
+       "        <table class=\"result-table\">\n",
+       "            <thead>\n",
+       "                <th colspan=3>\n",
+       "                    Result - <small><code>CF3(distance=180, ra=187, dec=13)</code></small>\n",
+       "                </th>\n",
+       "            </thead>\n",
+       "            <tbody>\n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"observed\">Observed</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12515.699706446017\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"adjusted\">Adjusted</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12940.58481990226\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "            </tbody>\n",
+       "        </table>\n",
+       "        <div class=\"\">\n",
+       "            <a onclick=\"return showRaw139806107928992rr14();\" href=\"#\">\n",
+       "                Show/Hide Raw\n",
+       "            </a>\n",
+       "            <div class=\"result-raw\">\n",
+       "                <code id=\"result-code-139806107928992rr14\" class=\"hidden\">\n",
+       "{\n",
+       "  \"message\": \"Success\",\n",
+       "  \"RA\": 186.99999497668534,\n",
+       "  \"Dec\": 13.000001835269385,\n",
+       "  \"Glon\": 280.56811463100814,\n",
+       "  \"Glat\": 74.84475460794316,\n",
+       "  \"SGL\": 102.09834270874016,\n",
+       "  \"SGB\": -2.8320379440905414,\n",
+       "  \"observed\": {\n",
+       "    \"velocity\": 12515.699706446017,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  },\n",
+       "  \"adjusted\": {\n",
+       "    \"velocity\": 12940.58481990226,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  }\n",
+       "}\n",
+       "                </code>\n",
+       "            </div>\n",
+       "        </div>\n",
+       "    </div>\n",
+       "    <div class=\"result-js\">\n",
+       "        <script>\n",
+       "            function showRaw139806107928992rr14(){\n",
+       "                var showed = document.getElementById(\n",
+       "                    \"result-code-139806107928992rr14\"\n",
+       "                ).classList.toggle(\"hidden\");\n",
+       "                return false;\n",
+       "            }\n",
+       "        </script>\n",
+       "    </div>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "Result - CF3(distance=180, ra=187, dec=13)\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Observed | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12515.699706446017 |\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Adjusted | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12940.58481990226  |\n",
+       "+----------+-----------------+--------------------+"
+      ]
+     },
+     "execution_count": 20,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "%%time\n",
-    "cf3.equatorial_search()"
+    "cf3.calculate_velocity(distance=180, ra=187, dec=13)"
    ]
   },
   {
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "As you can se the first time the total time is **17 seconds** and de the second time is only **6.56 ms**. This is because the project store te result on the local hardrive to avoid repeat the requests (by default a folfer called `pycf3_data`, is created in the user home)\n",
+    "As you can se the first time the total time is more than **10 seconds** and de the second time is in the order of the  **ms**. This is because the project store te result on the local hardrive to avoid repeat the requests (by default a folfer called `pycf3_data`, is created in the user home)\n",
     "\n",
     "But if we change the request by asking for another declination, this gonna be slow again:"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 21,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "CPU times: user 37.2 ms, sys: 0 ns, total: 37.2 ms\n",
+      "Wall time: 11.7 s\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "\n",
+       "<div class=\"result-container\" id=\"result-139806116851088rr97\">\n",
+       "    <div class=\"result-css\">\n",
+       "        <style>\n",
+       "            .observed {\n",
+       "                color: #dc3545! important;\n",
+       "            }\n",
+       "\n",
+       "            .adjusted {\n",
+       "                color: #28a745!important;\n",
+       "            }\n",
+       "\n",
+       "\n",
+       "            tablr.result-table, div.result-raw {\n",
+       "                width: 100%;\n",
+       "            }\n",
+       "\n",
+       "            table.result-table tr{\n",
+       "                 pointer-events: none;\n",
+       "                 background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container code{\n",
+       "                color: #e83e8c;\n",
+       "                background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container .hidden {\n",
+       "                display: none;\n",
+       "            }\n",
+       "\n",
+       "            div.result-raw {\n",
+       "                background-color: #333 !important;\n",
+       "            }\n",
+       "        </style>\n",
+       "    </div>\n",
+       "    <div class=\"result-container container-fluid\">\n",
+       "        <table class=\"result-table\">\n",
+       "            <thead>\n",
+       "                <th colspan=3>\n",
+       "                    Result - <small><code>CF3(distance=180, ra=187, dec=13.5)</code></small>\n",
+       "                </th>\n",
+       "            </thead>\n",
+       "            <tbody>\n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"observed\">Observed</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12512.725297090401\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"adjusted\">Adjusted</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12937.406568949371\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "            </tbody>\n",
+       "        </table>\n",
+       "        <div class=\"\">\n",
+       "            <a onclick=\"return showRaw139806116851088rr97();\" href=\"#\">\n",
+       "                Show/Hide Raw\n",
+       "            </a>\n",
+       "            <div class=\"result-raw\">\n",
+       "                <code id=\"result-code-139806116851088rr97\" class=\"hidden\">\n",
+       "{\n",
+       "  \"message\": \"Success\",\n",
+       "  \"RA\": 186.9999950300572,\n",
+       "  \"Dec\": 13.500001835269389,\n",
+       "  \"Glon\": 279.88275558287694,\n",
+       "  \"Glat\": 75.31258412600853,\n",
+       "  \"SGL\": 101.61924751937396,\n",
+       "  \"SGB\": -2.687124276261474,\n",
+       "  \"observed\": {\n",
+       "    \"velocity\": 12512.725297090401,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  },\n",
+       "  \"adjusted\": {\n",
+       "    \"velocity\": 12937.406568949371,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  }\n",
+       "}\n",
+       "                </code>\n",
+       "            </div>\n",
+       "        </div>\n",
+       "    </div>\n",
+       "    <div class=\"result-js\">\n",
+       "        <script>\n",
+       "            function showRaw139806116851088rr97(){\n",
+       "                var showed = document.getElementById(\n",
+       "                    \"result-code-139806116851088rr97\"\n",
+       "                ).classList.toggle(\"hidden\");\n",
+       "                return false;\n",
+       "            }\n",
+       "        </script>\n",
+       "    </div>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "Result - CF3(distance=180, ra=187, dec=13.5)\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Observed | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12512.725297090401 |\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Adjusted | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12937.406568949371 |\n",
+       "+----------+-----------------+--------------------+"
+      ]
+     },
+     "execution_count": 21,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "%%time\n",
-    "cf3.equatorial_search(dec=13.5)"
+    "cf3.calculate_velocity(distance=180, ra=187, dec=13.5)"
    ]
   },
   {
@@ -797,12 +1400,156 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 22,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "CPU times: user 2.4 ms, sys: 0 ns, total: 2.4 ms\n",
+      "Wall time: 1.58 ms\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "\n",
+       "<div class=\"result-container\" id=\"result-139806107928608rr64\">\n",
+       "    <div class=\"result-css\">\n",
+       "        <style>\n",
+       "            .observed {\n",
+       "                color: #dc3545! important;\n",
+       "            }\n",
+       "\n",
+       "            .adjusted {\n",
+       "                color: #28a745!important;\n",
+       "            }\n",
+       "\n",
+       "\n",
+       "            tablr.result-table, div.result-raw {\n",
+       "                width: 100%;\n",
+       "            }\n",
+       "\n",
+       "            table.result-table tr{\n",
+       "                 pointer-events: none;\n",
+       "                 background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container code{\n",
+       "                color: #e83e8c;\n",
+       "                background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container .hidden {\n",
+       "                display: none;\n",
+       "            }\n",
+       "\n",
+       "            div.result-raw {\n",
+       "                background-color: #333 !important;\n",
+       "            }\n",
+       "        </style>\n",
+       "    </div>\n",
+       "    <div class=\"result-container container-fluid\">\n",
+       "        <table class=\"result-table\">\n",
+       "            <thead>\n",
+       "                <th colspan=3>\n",
+       "                    Result - <small><code>CF3(distance=180, ra=187, dec=13.5)</code></small>\n",
+       "                </th>\n",
+       "            </thead>\n",
+       "            <tbody>\n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"observed\">Observed</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12512.725297090401\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"adjusted\">Adjusted</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12937.406568949371\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "            </tbody>\n",
+       "        </table>\n",
+       "        <div class=\"\">\n",
+       "            <a onclick=\"return showRaw139806107928608rr64();\" href=\"#\">\n",
+       "                Show/Hide Raw\n",
+       "            </a>\n",
+       "            <div class=\"result-raw\">\n",
+       "                <code id=\"result-code-139806107928608rr64\" class=\"hidden\">\n",
+       "{\n",
+       "  \"message\": \"Success\",\n",
+       "  \"RA\": 186.9999950300572,\n",
+       "  \"Dec\": 13.500001835269389,\n",
+       "  \"Glon\": 279.88275558287694,\n",
+       "  \"Glat\": 75.31258412600853,\n",
+       "  \"SGL\": 101.61924751937396,\n",
+       "  \"SGB\": -2.687124276261474,\n",
+       "  \"observed\": {\n",
+       "    \"velocity\": 12512.725297090401,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  },\n",
+       "  \"adjusted\": {\n",
+       "    \"velocity\": 12937.406568949371,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  }\n",
+       "}\n",
+       "                </code>\n",
+       "            </div>\n",
+       "        </div>\n",
+       "    </div>\n",
+       "    <div class=\"result-js\">\n",
+       "        <script>\n",
+       "            function showRaw139806107928608rr64(){\n",
+       "                var showed = document.getElementById(\n",
+       "                    \"result-code-139806107928608rr64\"\n",
+       "                ).classList.toggle(\"hidden\");\n",
+       "                return false;\n",
+       "            }\n",
+       "        </script>\n",
+       "    </div>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "Result - CF3(distance=180, ra=187, dec=13.5)\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Observed | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12512.725297090401 |\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Adjusted | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12937.406568949371 |\n",
+       "+----------+-----------------+--------------------+"
+      ]
+     },
+     "execution_count": 22,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "%%time\n",
-    "cf3.equatorial_search(dec=13.5)"
+    "cf3.calculate_velocity(distance=180, ra=187, dec=13.5)"
    ]
   },
   {
@@ -814,7 +1561,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 23,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -830,12 +1577,156 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 25,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "CPU times: user 2.45 ms, sys: 506 µs, total: 2.96 ms\n",
+      "Wall time: 1.92 ms\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "\n",
+       "<div class=\"result-container\" id=\"result-139806101651808rr77\">\n",
+       "    <div class=\"result-css\">\n",
+       "        <style>\n",
+       "            .observed {\n",
+       "                color: #dc3545! important;\n",
+       "            }\n",
+       "\n",
+       "            .adjusted {\n",
+       "                color: #28a745!important;\n",
+       "            }\n",
+       "\n",
+       "\n",
+       "            tablr.result-table, div.result-raw {\n",
+       "                width: 100%;\n",
+       "            }\n",
+       "\n",
+       "            table.result-table tr{\n",
+       "                 pointer-events: none;\n",
+       "                 background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container code{\n",
+       "                color: #e83e8c;\n",
+       "                background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container .hidden {\n",
+       "                display: none;\n",
+       "            }\n",
+       "\n",
+       "            div.result-raw {\n",
+       "                background-color: #333 !important;\n",
+       "            }\n",
+       "        </style>\n",
+       "    </div>\n",
+       "    <div class=\"result-container container-fluid\">\n",
+       "        <table class=\"result-table\">\n",
+       "            <thead>\n",
+       "                <th colspan=3>\n",
+       "                    Result - <small><code>CF3(distance=180, ra=187, dec=13)</code></small>\n",
+       "                </th>\n",
+       "            </thead>\n",
+       "            <tbody>\n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"observed\">Observed</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12515.699706446017\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"adjusted\">Adjusted</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12940.58481990226\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "            </tbody>\n",
+       "        </table>\n",
+       "        <div class=\"\">\n",
+       "            <a onclick=\"return showRaw139806101651808rr77();\" href=\"#\">\n",
+       "                Show/Hide Raw\n",
+       "            </a>\n",
+       "            <div class=\"result-raw\">\n",
+       "                <code id=\"result-code-139806101651808rr77\" class=\"hidden\">\n",
+       "{\n",
+       "  \"message\": \"Success\",\n",
+       "  \"RA\": 186.99999497668534,\n",
+       "  \"Dec\": 13.000001835269385,\n",
+       "  \"Glon\": 280.56811463100814,\n",
+       "  \"Glat\": 74.84475460794316,\n",
+       "  \"SGL\": 102.09834270874016,\n",
+       "  \"SGB\": -2.8320379440905414,\n",
+       "  \"observed\": {\n",
+       "    \"velocity\": 12515.699706446017,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  },\n",
+       "  \"adjusted\": {\n",
+       "    \"velocity\": 12940.58481990226,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  }\n",
+       "}\n",
+       "                </code>\n",
+       "            </div>\n",
+       "        </div>\n",
+       "    </div>\n",
+       "    <div class=\"result-js\">\n",
+       "        <script>\n",
+       "            function showRaw139806101651808rr77(){\n",
+       "                var showed = document.getElementById(\n",
+       "                    \"result-code-139806101651808rr77\"\n",
+       "                ).classList.toggle(\"hidden\");\n",
+       "                return false;\n",
+       "            }\n",
+       "        </script>\n",
+       "    </div>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "Result - CF3(distance=180, ra=187, dec=13)\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Observed | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12515.699706446017 |\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Adjusted | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12940.58481990226  |\n",
+       "+----------+-----------------+--------------------+"
+      ]
+     },
+     "execution_count": 25,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "%%time\n",
-    "cf3.equatorial_search()"
+    "cf3.calculate_velocity(distance=180, ra=187, dec=13)"
    ]
   },
   {
@@ -847,9 +1738,20 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 26,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "2"
+      ]
+     },
+     "execution_count": 26,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "cf3.cache.clear()"
    ]
@@ -863,12 +1765,21 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 28,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "CPU times: user 8.91 ms, sys: 239 µs, total: 9.15 ms\n",
+      "Wall time: 15.4 s\n"
+     ]
+    }
+   ],
    "source": [
     "%%time\n",
-    "cf3.equatorial_search()\n",
+    "cf3.calculate_velocity(distance=180, ra=187, dec=13.5)\n",
     "\n",
     "import time\n",
     "time.sleep(3)  # lets sleep 3 seconds"
@@ -883,12 +1794,156 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 30,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "CPU times: user 8.1 ms, sys: 1.25 ms, total: 9.35 ms\n",
+      "Wall time: 11.5 s\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "\n",
+       "<div class=\"result-container\" id=\"result-139806115899376rr73\">\n",
+       "    <div class=\"result-css\">\n",
+       "        <style>\n",
+       "            .observed {\n",
+       "                color: #dc3545! important;\n",
+       "            }\n",
+       "\n",
+       "            .adjusted {\n",
+       "                color: #28a745!important;\n",
+       "            }\n",
+       "\n",
+       "\n",
+       "            tablr.result-table, div.result-raw {\n",
+       "                width: 100%;\n",
+       "            }\n",
+       "\n",
+       "            table.result-table tr{\n",
+       "                 pointer-events: none;\n",
+       "                 background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container code{\n",
+       "                color: #e83e8c;\n",
+       "                background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container .hidden {\n",
+       "                display: none;\n",
+       "            }\n",
+       "\n",
+       "            div.result-raw {\n",
+       "                background-color: #333 !important;\n",
+       "            }\n",
+       "        </style>\n",
+       "    </div>\n",
+       "    <div class=\"result-container container-fluid\">\n",
+       "        <table class=\"result-table\">\n",
+       "            <thead>\n",
+       "                <th colspan=3>\n",
+       "                    Result - <small><code>CF3(distance=180, ra=187, dec=13.5)</code></small>\n",
+       "                </th>\n",
+       "            </thead>\n",
+       "            <tbody>\n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"observed\">Observed</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12512.725297090401\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"adjusted\">Adjusted</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12937.406568949371\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "            </tbody>\n",
+       "        </table>\n",
+       "        <div class=\"\">\n",
+       "            <a onclick=\"return showRaw139806115899376rr73();\" href=\"#\">\n",
+       "                Show/Hide Raw\n",
+       "            </a>\n",
+       "            <div class=\"result-raw\">\n",
+       "                <code id=\"result-code-139806115899376rr73\" class=\"hidden\">\n",
+       "{\n",
+       "  \"message\": \"Success\",\n",
+       "  \"RA\": 186.9999950300572,\n",
+       "  \"Dec\": 13.500001835269389,\n",
+       "  \"Glon\": 279.88275558287694,\n",
+       "  \"Glat\": 75.31258412600853,\n",
+       "  \"SGL\": 101.61924751937396,\n",
+       "  \"SGB\": -2.687124276261474,\n",
+       "  \"observed\": {\n",
+       "    \"velocity\": 12512.725297090401,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  },\n",
+       "  \"adjusted\": {\n",
+       "    \"velocity\": 12937.406568949371,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  }\n",
+       "}\n",
+       "                </code>\n",
+       "            </div>\n",
+       "        </div>\n",
+       "    </div>\n",
+       "    <div class=\"result-js\">\n",
+       "        <script>\n",
+       "            function showRaw139806115899376rr73(){\n",
+       "                var showed = document.getElementById(\n",
+       "                    \"result-code-139806115899376rr73\"\n",
+       "                ).classList.toggle(\"hidden\");\n",
+       "                return false;\n",
+       "            }\n",
+       "        </script>\n",
+       "    </div>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "Result - CF3(distance=180, ra=187, dec=13.5)\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Observed | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12512.725297090401 |\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Adjusted | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12937.406568949371 |\n",
+       "+----------+-----------------+--------------------+"
+      ]
+     },
+     "execution_count": 30,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "%%time\n",
-    "cf3.equatorial_search()"
+    "cf3.calculate_velocity(distance=180, ra=187, dec=13.5)"
    ]
   },
   {
@@ -900,12 +1955,156 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 31,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "CPU times: user 2.01 ms, sys: 631 µs, total: 2.64 ms\n",
+      "Wall time: 1.72 ms\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "\n",
+       "<div class=\"result-container\" id=\"result-139806101654832rr9\">\n",
+       "    <div class=\"result-css\">\n",
+       "        <style>\n",
+       "            .observed {\n",
+       "                color: #dc3545! important;\n",
+       "            }\n",
+       "\n",
+       "            .adjusted {\n",
+       "                color: #28a745!important;\n",
+       "            }\n",
+       "\n",
+       "\n",
+       "            tablr.result-table, div.result-raw {\n",
+       "                width: 100%;\n",
+       "            }\n",
+       "\n",
+       "            table.result-table tr{\n",
+       "                 pointer-events: none;\n",
+       "                 background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container code{\n",
+       "                color: #e83e8c;\n",
+       "                background-color: inherit !important;\n",
+       "            }\n",
+       "\n",
+       "            .result-container .hidden {\n",
+       "                display: none;\n",
+       "            }\n",
+       "\n",
+       "            div.result-raw {\n",
+       "                background-color: #333 !important;\n",
+       "            }\n",
+       "        </style>\n",
+       "    </div>\n",
+       "    <div class=\"result-container container-fluid\">\n",
+       "        <table class=\"result-table\">\n",
+       "            <thead>\n",
+       "                <th colspan=3>\n",
+       "                    Result - <small><code>CF3(distance=180, ra=187, dec=13.5)</code></small>\n",
+       "                </th>\n",
+       "            </thead>\n",
+       "            <tbody>\n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"observed\">Observed</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12512.725297090401\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "                <tr>\n",
+       "                    <th rowspan=2 class=\"adjusted\">Adjusted</th>\n",
+       "                    <td>Distance (Mpc)</td>\n",
+       "                    <td>\n",
+       "                        [180.]\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                <tr>\n",
+       "                    <td>Velocity (Km/s)</td>\n",
+       "                    <td>\n",
+       "                        12937.406568949371\n",
+       "                    </td>\n",
+       "                </tr>\n",
+       "                \n",
+       "            </tbody>\n",
+       "        </table>\n",
+       "        <div class=\"\">\n",
+       "            <a onclick=\"return showRaw139806101654832rr9();\" href=\"#\">\n",
+       "                Show/Hide Raw\n",
+       "            </a>\n",
+       "            <div class=\"result-raw\">\n",
+       "                <code id=\"result-code-139806101654832rr9\" class=\"hidden\">\n",
+       "{\n",
+       "  \"message\": \"Success\",\n",
+       "  \"RA\": 186.9999950300572,\n",
+       "  \"Dec\": 13.500001835269389,\n",
+       "  \"Glon\": 279.88275558287694,\n",
+       "  \"Glat\": 75.31258412600853,\n",
+       "  \"SGL\": 101.61924751937396,\n",
+       "  \"SGB\": -2.687124276261474,\n",
+       "  \"observed\": {\n",
+       "    \"velocity\": 12512.725297090401,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  },\n",
+       "  \"adjusted\": {\n",
+       "    \"velocity\": 12937.406568949371,\n",
+       "    \"distance\": [\n",
+       "      180.0\n",
+       "    ]\n",
+       "  }\n",
+       "}\n",
+       "                </code>\n",
+       "            </div>\n",
+       "        </div>\n",
+       "    </div>\n",
+       "    <div class=\"result-js\">\n",
+       "        <script>\n",
+       "            function showRaw139806101654832rr9(){\n",
+       "                var showed = document.getElementById(\n",
+       "                    \"result-code-139806101654832rr9\"\n",
+       "                ).classList.toggle(\"hidden\");\n",
+       "                return false;\n",
+       "            }\n",
+       "        </script>\n",
+       "    </div>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "Result - CF3(distance=180, ra=187, dec=13.5)\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Observed | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12512.725297090401 |\n",
+       "+----------+-----------------+--------------------+\n",
+       "| Adjusted | Distance (Mpc)  | [180.]             |\n",
+       "|          | Velocity (Km/s) | 12937.406568949371 |\n",
+       "+----------+-----------------+--------------------+"
+      ]
+     },
+     "execution_count": 31,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "%%time\n",
-    "cf3.equatorial_search()"
+    "cf3.calculate_velocity(distance=180, ra=187, dec=13.5)"
    ]
   },
   {
@@ -945,9 +2144,20 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 32,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "CF3(calculator='CF3', cache_dir='', cache_expire=None)"
+      ]
+     },
+     "execution_count": 32,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "cf3 = pycf3.CF3(cache=pycf3.NoCache())\n",
     "cf3"
@@ -966,15 +2176,17 @@
    "source": [
     "## PyCF3 Retry\n",
     "\n",
-    "By default any `pycf3.CF3` instance try **3 times** to perform a request.\n",
+    "By default any calculator instance try **3 times** to perform a request.\n",
     "if you want to add more retries you need to change the default `session` of the instance.\n",
     "\n",
+    "> Note: We are using the `pycf3.CF3` client as an example, but any other `pycf3` calculator has the same functionalities.\n",
+    "\n",
     "For example if you want to try 2 times:"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 33,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -991,11 +2203,22 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 34,
    "metadata": {
     "nbsphinx": "hidden"
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "1"
+      ]
+     },
+     "execution_count": 34,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "## this cell is hidden in sphinx (see the cell metadata)\n",
     "cf3.cache.clear()"
@@ -1003,13 +2226,62 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 35,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "ename": "ConnectionError",
+     "evalue": "HTTPConnectionPool(host='edd.ifa.hawaii.edu', port=80): Max retries exceeded with url: /CF3calculator/api.php (Caused by ReadTimeoutError(\"HTTPConnectionPool(host='edd.ifa.hawaii.edu', port=80): Read timed out. (read timeout=5)\"))",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
+      "\u001b[0;31mtimeout\u001b[0m                                   Traceback (most recent call last)",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/urllib3/connectionpool.py\u001b[0m in \u001b[0;36m_make_request\u001b[0;34m(self, conn, method, url, timeout, chunked, **httplib_request_kw)\u001b[0m\n\u001b[1;32m    420\u001b[0m                     \u001b[0;31m# Otherwise it looks like a bug in the code.\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 421\u001b[0;31m                     \u001b[0msix\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mraise_from\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0me\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;32mNone\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    422\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0;34m(\u001b[0m\u001b[0mSocketTimeout\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mBaseSSLError\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mSocketError\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;32mas\u001b[0m \u001b[0me\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/six.py\u001b[0m in \u001b[0;36mraise_from\u001b[0;34m(value, from_value)\u001b[0m\n",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/urllib3/connectionpool.py\u001b[0m in \u001b[0;36m_make_request\u001b[0;34m(self, conn, method, url, timeout, chunked, **httplib_request_kw)\u001b[0m\n\u001b[1;32m    415\u001b[0m                 \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 416\u001b[0;31m                     \u001b[0mhttplib_response\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mconn\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mgetresponse\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    417\u001b[0m                 \u001b[0;32mexcept\u001b[0m \u001b[0mBaseException\u001b[0m \u001b[0;32mas\u001b[0m \u001b[0me\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m/usr/lib/python3.8/http/client.py\u001b[0m in \u001b[0;36mgetresponse\u001b[0;34m(self)\u001b[0m\n\u001b[1;32m   1346\u001b[0m             \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m-> 1347\u001b[0;31m                 \u001b[0mresponse\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mbegin\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m   1348\u001b[0m             \u001b[0;32mexcept\u001b[0m \u001b[0mConnectionError\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m/usr/lib/python3.8/http/client.py\u001b[0m in \u001b[0;36mbegin\u001b[0;34m(self)\u001b[0m\n\u001b[1;32m    306\u001b[0m         \u001b[0;32mwhile\u001b[0m \u001b[0;32mTrue\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 307\u001b[0;31m             \u001b[0mversion\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mstatus\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mreason\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_read_status\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    308\u001b[0m             \u001b[0;32mif\u001b[0m \u001b[0mstatus\u001b[0m \u001b[0;34m!=\u001b[0m \u001b[0mCONTINUE\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m/usr/lib/python3.8/http/client.py\u001b[0m in \u001b[0;36m_read_status\u001b[0;34m(self)\u001b[0m\n\u001b[1;32m    267\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0m_read_status\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 268\u001b[0;31m         \u001b[0mline\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mstr\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mfp\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mreadline\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0m_MAXLINE\u001b[0m \u001b[0;34m+\u001b[0m \u001b[0;36m1\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m\"iso-8859-1\"\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    269\u001b[0m         \u001b[0;32mif\u001b[0m \u001b[0mlen\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mline\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;34m>\u001b[0m \u001b[0m_MAXLINE\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m/usr/lib/python3.8/socket.py\u001b[0m in \u001b[0;36mreadinto\u001b[0;34m(self, b)\u001b[0m\n\u001b[1;32m    668\u001b[0m             \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 669\u001b[0;31m                 \u001b[0;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_sock\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mrecv_into\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mb\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    670\u001b[0m             \u001b[0;32mexcept\u001b[0m \u001b[0mtimeout\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;31mtimeout\u001b[0m: timed out",
+      "\nDuring handling of the above exception, another exception occurred:\n",
+      "\u001b[0;31mReadTimeoutError\u001b[0m                          Traceback (most recent call last)",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/urllib3/connectionpool.py\u001b[0m in \u001b[0;36murlopen\u001b[0;34m(self, method, url, body, headers, retries, redirect, assert_same_host, timeout, pool_timeout, release_conn, chunked, body_pos, **response_kw)\u001b[0m\n\u001b[1;32m    664\u001b[0m             \u001b[0;31m# Make the request on the httplib connection object.\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 665\u001b[0;31m             httplib_response = self._make_request(\n\u001b[0m\u001b[1;32m    666\u001b[0m                 \u001b[0mconn\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/urllib3/connectionpool.py\u001b[0m in \u001b[0;36m_make_request\u001b[0;34m(self, conn, method, url, timeout, chunked, **httplib_request_kw)\u001b[0m\n\u001b[1;32m    422\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0;34m(\u001b[0m\u001b[0mSocketTimeout\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mBaseSSLError\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mSocketError\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;32mas\u001b[0m \u001b[0me\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 423\u001b[0;31m             \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_raise_timeout\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0merr\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0me\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0murl\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0murl\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mtimeout_value\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mread_timeout\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    424\u001b[0m             \u001b[0;32mraise\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/urllib3/connectionpool.py\u001b[0m in \u001b[0;36m_raise_timeout\u001b[0;34m(self, err, url, timeout_value)\u001b[0m\n\u001b[1;32m    329\u001b[0m         \u001b[0;32mif\u001b[0m \u001b[0misinstance\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0merr\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mSocketTimeout\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 330\u001b[0;31m             raise ReadTimeoutError(\n\u001b[0m\u001b[1;32m    331\u001b[0m                 \u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0murl\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m\"Read timed out. (read timeout=%s)\"\u001b[0m \u001b[0;34m%\u001b[0m \u001b[0mtimeout_value\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;31mReadTimeoutError\u001b[0m: HTTPConnectionPool(host='edd.ifa.hawaii.edu', port=80): Read timed out. (read timeout=5)",
+      "\nDuring handling of the above exception, another exception occurred:\n",
+      "\u001b[0;31mMaxRetryError\u001b[0m                             Traceback (most recent call last)",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/requests/adapters.py\u001b[0m in \u001b[0;36msend\u001b[0;34m(self, request, stream, timeout, verify, cert, proxies)\u001b[0m\n\u001b[1;32m    438\u001b[0m             \u001b[0;32mif\u001b[0m \u001b[0;32mnot\u001b[0m \u001b[0mchunked\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 439\u001b[0;31m                 resp = conn.urlopen(\n\u001b[0m\u001b[1;32m    440\u001b[0m                     \u001b[0mmethod\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mrequest\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mmethod\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/urllib3/connectionpool.py\u001b[0m in \u001b[0;36murlopen\u001b[0;34m(self, method, url, body, headers, retries, redirect, assert_same_host, timeout, pool_timeout, release_conn, chunked, body_pos, **response_kw)\u001b[0m\n\u001b[1;32m    746\u001b[0m             )\n\u001b[0;32m--> 747\u001b[0;31m             return self.urlopen(\n\u001b[0m\u001b[1;32m    748\u001b[0m                 \u001b[0mmethod\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/urllib3/connectionpool.py\u001b[0m in \u001b[0;36murlopen\u001b[0;34m(self, method, url, body, headers, retries, redirect, assert_same_host, timeout, pool_timeout, release_conn, chunked, body_pos, **response_kw)\u001b[0m\n\u001b[1;32m    746\u001b[0m             )\n\u001b[0;32m--> 747\u001b[0;31m             return self.urlopen(\n\u001b[0m\u001b[1;32m    748\u001b[0m                 \u001b[0mmethod\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/urllib3/connectionpool.py\u001b[0m in \u001b[0;36murlopen\u001b[0;34m(self, method, url, body, headers, retries, redirect, assert_same_host, timeout, pool_timeout, release_conn, chunked, body_pos, **response_kw)\u001b[0m\n\u001b[1;32m    718\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 719\u001b[0;31m             retries = retries.increment(\n\u001b[0m\u001b[1;32m    720\u001b[0m                 \u001b[0mmethod\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0murl\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0merror\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0me\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0m_pool\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0m_stacktrace\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0msys\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mexc_info\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;36m2\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/urllib3/util/retry.py\u001b[0m in \u001b[0;36mincrement\u001b[0;34m(self, method, url, response, error, _pool, _stacktrace)\u001b[0m\n\u001b[1;32m    435\u001b[0m         \u001b[0;32mif\u001b[0m \u001b[0mnew_retry\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mis_exhausted\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 436\u001b[0;31m             \u001b[0;32mraise\u001b[0m \u001b[0mMaxRetryError\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0m_pool\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0murl\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0merror\u001b[0m \u001b[0;32mor\u001b[0m \u001b[0mResponseError\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mcause\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    437\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;31mMaxRetryError\u001b[0m: HTTPConnectionPool(host='edd.ifa.hawaii.edu', port=80): Max retries exceeded with url: /CF3calculator/api.php (Caused by ReadTimeoutError(\"HTTPConnectionPool(host='edd.ifa.hawaii.edu', port=80): Read timed out. (read timeout=5)\"))",
+      "\nDuring handling of the above exception, another exception occurred:\n",
+      "\u001b[0;31mConnectionError\u001b[0m                           Traceback (most recent call last)",
+      "\u001b[0;32m<ipython-input-35-a5a25eb08020>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[1;32m      1\u001b[0m \u001b[0;31m# no more than 5 seconds between every request\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 2\u001b[0;31m \u001b[0mcf3\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mcalculate_velocity\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mdistance\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;36m180\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mra\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;36m187\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mdec\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;36m13.5\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mtimeout\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;36m5\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
+      "\u001b[0;32m~/proyectos/cf3/src/pycf3.py\u001b[0m in \u001b[0;36mcalculate_velocity\u001b[0;34m(self, distance, ra, dec, glon, glat, sgl, sgb, **get_kwargs)\u001b[0m\n\u001b[1;32m    902\u001b[0m             \u001b[0mra\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mra\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mdec\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mdec\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mglon\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mglon\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mglat\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mglat\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0msgl\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0msgl\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0msgb\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0msgb\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    903\u001b[0m         )\n\u001b[0;32m--> 904\u001b[0;31m         response = self._search(\n\u001b[0m\u001b[1;32m    905\u001b[0m             \u001b[0mcoordinate_system\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mcoordinate_system\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    906\u001b[0m             \u001b[0malpha\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0malpha\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m~/proyectos/cf3/src/pycf3.py\u001b[0m in \u001b[0;36m_search\u001b[0;34m(self, coordinate_system, alpha, delta, distance, velocity, **get_kwargs)\u001b[0m\n\u001b[1;32m    727\u001b[0m             \u001b[0mresponse\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mcache\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mget\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mkey\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mdefault\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mdcache\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mcore\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mENOVAL\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mretry\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;32mTrue\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    728\u001b[0m             \u001b[0;32mif\u001b[0m \u001b[0mresponse\u001b[0m \u001b[0;34m==\u001b[0m \u001b[0mdcache\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mcore\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mENOVAL\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 729\u001b[0;31m                 response = self.session.get(\n\u001b[0m\u001b[1;32m    730\u001b[0m                     \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mURL\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mjson\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mpayload\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m**\u001b[0m\u001b[0mget_kwargs\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    731\u001b[0m                 )\n",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/requests/sessions.py\u001b[0m in \u001b[0;36mget\u001b[0;34m(self, url, **kwargs)\u001b[0m\n\u001b[1;32m    544\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    545\u001b[0m         \u001b[0mkwargs\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0msetdefault\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m'allow_redirects'\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;32mTrue\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 546\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mrequest\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m'GET'\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0murl\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m**\u001b[0m\u001b[0mkwargs\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    547\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    548\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0moptions\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0murl\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m**\u001b[0m\u001b[0mkwargs\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/requests/sessions.py\u001b[0m in \u001b[0;36mrequest\u001b[0;34m(self, method, url, params, data, headers, cookies, files, auth, timeout, allow_redirects, proxies, hooks, stream, verify, cert, json)\u001b[0m\n\u001b[1;32m    531\u001b[0m         }\n\u001b[1;32m    532\u001b[0m         \u001b[0msend_kwargs\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mupdate\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0msettings\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 533\u001b[0;31m         \u001b[0mresp\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0msend\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mprep\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m**\u001b[0m\u001b[0msend_kwargs\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    534\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    535\u001b[0m         \u001b[0;32mreturn\u001b[0m \u001b[0mresp\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/requests/sessions.py\u001b[0m in \u001b[0;36msend\u001b[0;34m(self, request, **kwargs)\u001b[0m\n\u001b[1;32m    644\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    645\u001b[0m         \u001b[0;31m# Send the request\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 646\u001b[0;31m         \u001b[0mr\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0madapter\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0msend\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mrequest\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m**\u001b[0m\u001b[0mkwargs\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    647\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    648\u001b[0m         \u001b[0;31m# Total elapsed time of the request (approximately)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;32m~/proyectos/cf3/lib/python3.8/site-packages/requests/adapters.py\u001b[0m in \u001b[0;36msend\u001b[0;34m(self, request, stream, timeout, verify, cert, proxies)\u001b[0m\n\u001b[1;32m    514\u001b[0m                 \u001b[0;32mraise\u001b[0m \u001b[0mSSLError\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0me\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mrequest\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mrequest\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    515\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 516\u001b[0;31m             \u001b[0;32mraise\u001b[0m \u001b[0mConnectionError\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0me\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mrequest\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mrequest\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    517\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    518\u001b[0m         \u001b[0;32mexcept\u001b[0m \u001b[0mClosedPoolError\u001b[0m \u001b[0;32mas\u001b[0m \u001b[0me\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
+      "\u001b[0;31mConnectionError\u001b[0m: HTTPConnectionPool(host='edd.ifa.hawaii.edu', port=80): Max retries exceeded with url: /CF3calculator/api.php (Caused by ReadTimeoutError(\"HTTPConnectionPool(host='edd.ifa.hawaii.edu', port=80): Read timed out. (read timeout=5)\"))"
+     ]
+    }
+   ],
    "source": [
     "# no more than 5 seconds between every request\n",
-    "cf3.equatorial_search(timeout=5)"
+    "cf3.calculate_velocity(distance=180, ra=187, dec=13.5, timeout=5)"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {