Updates to FCFs and extinction correction

Over the past couple months the flux conversion factors and extinction corrections have been updated and we are now very happy with the answers. The main issue from the user perspective is that the FCF you apply critically depends on which version of SMURF was used to generate the map. At the time of writing this data products downloaded from CADC use an older extinction correction than the value you will find in place for the current SMURF. We plan to update CADC processing shortly but reprocessing the historical archive will take some time.

We have set up a web page at JAC listing the parameters that should be used and instructions on how to determine which version of the software was used to generate your map:

http://www.jach.hawaii.edu/JCMT/continuum/scuba2/scuba2_relations.html