The IsrTask was not usable as a CmdLineTask, as it was written to be called as a subtask of ProcessCcdTask. This allows the default IsrTask to be retargeted to camera-specific versions of the ISR processing.
A new RunIsrTask now exists to hold IsrTask for retargetting in standalone processing, and both processCcd.py and the new runIsr.py now read from the same configuration files for each obs_ package. This has involved migrating configuration values from config/processCcd.py to config/isr.py for many obs_ packages.
This change closes DM-6640, and modifies:
ip_isr
obs_base
obs_cfht
obs_ctio0m9
obs_decam
obs_lsstCam
obs_lsstSim
obs_monocam
obs_sdss
obs_subaru
obs_test