add dm.dfs_rc_auto() to download rc automatically

csst_common/data_manager.py

@@ -638,6 +638,49 @@ class CsstMsDataManager:
         except:
             return False
 
+    def get_coord(self):
+        """ Get pointing coordinate. """
+        header = fits.getheader(self.l0_detector(detector=self.target_detectors[0]))
+        pointing_ra = header["RA_OBJ"]
+        pointing_dec = header["DEC_OBJ"]
+        return pointing_ra, pointing_dec
+
+    def dfs_rc_auto(self):
+        """ Download RC. """
+        assert self.dfs_is_available()
+        assert len(self.target_detectors) >= 1
+        pointing_ra, pointing_dec = self.get_coord()
+        refcat = self.dfs_rc_query(
+            ra=pointing_ra,
+            dec=pointing_dec,
+            columns=(
+                    'ref_epoch',
+                    'ra',
+                    'ra_error',
+                    'dec',
+                    'dec_error',
+                    'parallax',
+                    'parallax_error',
+                    'pmra',
+                    'pmra_error',
+                    'pmdec',
+                    'pmdec_error',
+                    'phot_g_mean_mag',
+                    'source_id'
+            ),
+            radius=2,
+            min_mag=0,
+            max_mag=30,
+            obstime=-1,
+            limit=-1
+        )
+        print(
+            f"RA, Dec = [{pointing_ra}, {pointing_dec}], "
+            f"Status = {isinstance(refcat, Table)}, "
+            f"N_entries = {len(refcat)}"
+        )
+        return refcat
+
     def dfs_rc_query(
             self,
             ra=180,