landmanbester
commented
1 week ago Thanks for pointing this out. I'm not actually sure if my headers strictly adhere to the fits format (since the truth is actually encoded in the dds and fits is mainly for viewing). I set the headers up here
if you spot anything else that needs to change please report it on this issue. I've renamed it to make it a bit more general
The reference frequency in the FITS headers produced by pfb seem to correspond to the lowest frequency in the data, e.g. for this UHF map:
It's more standard for MFS images to have the central frequency, but if there's a good reason to have the lowest frequency instead it can be worked around.