parameters will be passed as JSON objects only when accessing the PANSTARRS API

Author: jaymedina

astroquery/mast/collections.py

@@ -313,7 +313,11 @@ def query_criteria_async(self, catalog, *, pagesize=None, page=None, **criteria)
                 raise InvalidQueryError("At least one non-positional criterion must be supplied.")
             params["filters"] = filters
 
-        return self._current_connection.service_request_async(service, params, pagesize=pagesize, page=page)
+        # Parameters will be passed as JSON objects only when accessing the PANSTARRS API
+        use_json = True if catalog.lower() == 'panstarrs' else False
+
+        return self._current_connection.service_request_async(service, params, pagesize=pagesize, page=page,
+                                                              use_json=use_json)
 
     @class_or_instance
     def query_hsc_matchid_async(self, match, *, version=3, pagesize=None, page=None):