Try using astroquery's logger in cadc.

Author: jwoillez

astroquery/cadc/core.py

@@ -7,7 +7,7 @@
 Module to query the Canadian Astronomy Data Centre (CADC).
 """
 
-import logging
+from astroquery import log as logger
 import warnings
 import requests
 from numpy import ma
@@ -38,8 +38,6 @@
 
 CADC_COOKIE_PREFIX = 'CADC_SSO'
 
-logger = logging.getLogger('cadc')
-
 # TODO figure out what to do if anything about them. Some might require
 # fixes on the CADC servers
 warnings.filterwarnings('ignore', module='astropy.io.votable')