update code

csst/msc/calib_pos.py

@@ -10,6 +10,9 @@ from astropy import units as u
 from astropy.coordinates import SkyCoord
 from astropy.io import fits
 from astropy.wcs import WCS
+from astropy.time import Time
+from astropy.table import Table
+
 
 from .. import PACKAGE_PATH
 from ..core.processor import CsstProcessor