When producing temporary warped exposures for coadds, we’re noticing that our warped frames are being padded by extremely large values (i.e., maximum floating point values of 3.40282e38). This appears to prevent the files from being effectively lossy compressed (we’re using a
quantizeLevel of 16, which appears to be robust for
processCcd.py outputs), which is a bit of a problem for those of us with limited disk space.
Does anyone know if there is a way to specify the pad value when producing temporary warp exposures? We’re also encountering a similar effect in the outputs of
imageDifference.py, so a similar solution there would also be really handy.