Add Gaia catalog to plugin

CHANGES.rst

@@ -32,6 +32,8 @@ Imviz
 
 - Added a table with catalog search results. [#2915]
 
+- Added Gaia catalog to Catalog plugin. [#3090]
+
 Mosviz
 ^^^^^^
 

jdaviz/configs/imviz/plugins/catalogs/catalogs.py

@@ -10,6 +10,7 @@
 from jdaviz.core.template_mixin import (PluginTemplateMixin, ViewerSelectMixin,
                                         FileImportSelectPluginComponent, HasFileImportSelect,
                                         with_spinner)
+from jdaviz.core.custom_traitlets import IntHandleEmpty
 
 from jdaviz.core.template_mixin import TableMixin
 from jdaviz.core.user_api import PluginUserApi
@@ -34,6 +35,7 @@
     catalog_selected = Unicode("").tag(sync=True)
     results_available = Bool(False).tag(sync=True)
     number_of_results = Int(0).tag(sync=True)
+    max_gaia_sources = IntHandleEmpty(1000).tag(sync=True)
 
     # setting the default table headers and values
     _default_table_values = {
@@ -50,7 +52,8 @@
         self.catalog = FileImportSelectPluginComponent(self,
                                                        items='catalog_items',
                                                        selected='catalog_selected',
-                                                       manual_options=['SDSS', 'From File...'])
+                                                       manual_options=['SDSS', 'Gaia',
+                                                                       'From File...'])
 
         # set the custom file parser for importing catalogs
         self.catalog._file_parser = self._file_parser
@@ -167,6 +170,22 @@
                             'Object ID': row['objid']}
                 self.table.add_item(row_info)
 
+        elif self.catalog_selected == 'Gaia':
+            from astroquery.gaia import Gaia
+            from astroquery.gaia import conf
+
+            with conf.set_temp("ROW_LIMIT", self.max_gaia_sources):
+                sources = Gaia.query_object(skycoord_center, radius=zoom_radius,
+                                            columns=('source_id', 'ra', 'dec'))
+            self.app._catalog_source_table = sources
+            skycoord_table = SkyCoord(sources['ra'], sources['dec'], unit='deg')
+            # adding in coords + Id's into table
+            for row in sources:
+                row_info = {'Right Ascension (degrees)': row['ra'],
+                            'Declination (degrees)': row['dec'],
+                            'Source ID': row['SOURCE_ID']}
+                self.table.add_item(row_info)
+
         elif self.catalog_selected == 'From File...':
             # all exceptions when going through the UI should have prevented setting this path
             # but this exceptions might be raised here if setting from_file from the UI

jdaviz/configs/imviz/plugins/catalogs/catalogs.vue

@@ -28,6 +28,24 @@
       <g-file-import id="file-uploader"></g-file-import>
     </plugin-file-import-select>
 
+    <v-row v-if="catalog_selected === 'Gaia'">
+      <j-docs-link>
+        See the <j-external-link link='https://astroquery.readthedocs.io/en/latest/gaia/gaia.html' linktext='astropy.gaia docs'></j-external-link> for details on other configurable features.
+      </j-docs-link>
+    </v-row>
+
+    <v-row v-if="catalog_selected === 'Gaia'">
+      <v-text-field
+        v-model.number="max_gaia_sources"
+        type="number"
+        step="10"
+        :rules="[() => max_gaia_sources!=='' || 'This field is required']"
+        label="Max sources"
+        hint="Maximum number of sources."
+        persistent-hint
+      ></v-text-field>
+    </v-row>
+
     <v-row class="row-no-outside-padding">
        <v-col>
          <plugin-action-button