Tibeuleu/FOC_Reduction
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correct a bug where rotation doesn't update header when wcs.pc is identity

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This commit is contained in:
Thibault Barnouin
2022-07-11 17:36:30 +02:00
parent 2c5d4212ac
commit e61984ae3d
55 changed files with 161 additions and 161 deletions
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11
src/lib/fits.py
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@@ -52,25 +52,20 @@ def get_obs_data(infiles, data_folder="", compute_flux=False):
new_wcs = wcs.WCS(header).deepcopy()
if new_wcs.wcs.has_cd() or (new_wcs.wcs.cdelt == np.array([1., 1.])).all():
# Update WCS with relevant information
HST_aper = 2400. # HST aperture in mm
f_ratio = header['f_ratio']
px_dim = np.array([25., 25.]) # Pixel dimension in µm
if header['pxformt'].lower() == 'zoom':
px_dim[0] = 50.
#new_cdelt = 206.3/3600.*px_dim/(f_ratio*HST_aper)
new_cdelt = np.abs(np.linalg.eig(new_wcs.wcs.cd)[0])
if new_wcs.wcs.has_cd():
old_cd = new_wcs.wcs.cd
del new_wcs.wcs.cd
keys = list(new_wcs.to_header().keys())+['CD1_1','CD1_2','CD2_1','CD2_2']
for key in keys:
header.remove(key, ignore_missing=True)
new_cdelt = np.linalg.eig(old_cd)[0]
elif (new_wcs.wcs.cdelt == np.array([1., 1.])).all() and \
(new_wcs.array_shape in [(512, 512),(1024,512),(512,1024),(1024,1024)]):
old_cd = new_wcs.wcs.pc
new_wcs.wcs.pc = np.dot(old_cd, np.diag(1./new_cdelt))
new_wcs.wcs.cdelt = new_cdelt
header.update(new_wcs.to_header())
for key, val in new_wcs.to_header().items():
header[key] = val
if compute_flux:
for i in range(len(infiles)):