Merge pull request #20 from lsst/tickets/DM-17029

DM-17029: Update LoadReferenceObjectsTask to output fluxes in nanojansky

python/lsst/meas/extensions/astrometryNet/loadAstrometryNetObjects.py

@@ -6,6 +6,7 @@
 
 import lsst.pipe.base as pipeBase
 from lsst.meas.algorithms import LoadReferenceObjectsTask, getRefFluxField
+from lsst.meas.algorithms.loadReferenceObjects import convertToNanojansky
 from . import astrometry_net
 from .multiindex import AstrometryNetCatalog, getConfigFromEnvironment
 
@@ -154,6 +155,12 @@ def loadSkyCircle(self, ctrCoord, radius, filterName=None, epoch=None):
         if not refCat.isContiguous():
             refCat = refCat.copy(deep=True)
 
+        # Update flux fields to be nJy. a.net catalogs do not have a conversion script.
+        self.log.warn("Loading A.net reference catalog with old style units in schema.")
+        self.log.warn("A.net reference catalogs will not be supported in the future.")
+        self.log.warn("See RFC-562 and RFC-575 for more details.")
+        refCat = convertToNanojansky(refCat, self.log)
+
         self.log.debug("found %d objects", len(refCat))
         return pipeBase.Struct(
             refCat=refCat,