extract_flatfield
- acstools.utils_calib.extract_flatfield(prihdr, scihdu)
Extract flatfield data from
PFLTFILE.- Parameters:
prihdr (obj) – FITS primary header HDU.
scihdu (obj) – Extension HDU of the science image. This is only used to extract subarray data.
- Returns:
invflat – Inverse flatfield, if any. Multiply this to apply
FLATCORR.- Return type:
ndarray or
None