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| author | hack <hack@stsci.edu> | 2014-04-02 16:03:23 -0400 |
|---|---|---|
| committer | hack <hack@stsci.edu> | 2014-04-02 16:03:23 -0400 |
| commit | 49ed98f36b448b2ed06df373df0df3615395d45a (patch) | |
| tree | 13a9afb2564d31b91dd7d059f1c83d9c8c14a2f5 /lib/stwcs/updatewcs | |
| parent | 36201df3fe7378d0a181bcbae5195f8f296c13bf (diff) | |
| download | stwcs_hcf-49ed98f36b448b2ed06df373df0df3615395d45a.tar.gz | |
Support has been added for optional TDD Alpha term to be read in from IDCTAB primary header for new (non-Jay Anderson) TDD correction.
git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stwcs/trunk@30795 fe389314-cf27-0410-b35b-8c050e845b92
Diffstat (limited to 'lib/stwcs/updatewcs')
| -rw-r--r-- | lib/stwcs/updatewcs/corrections.py | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/stwcs/updatewcs/corrections.py b/lib/stwcs/updatewcs/corrections.py index 6dc2ecd..f9e0b38 100644 --- a/lib/stwcs/updatewcs/corrections.py +++ b/lib/stwcs/updatewcs/corrections.py @@ -104,8 +104,11 @@ class TDDCorr(object): skew_coeffs = hwcs.idcmodel.refpix['skew_coeffs'] cy_beta = skew_coeffs['TDD_CY_BETA'] - - hwcs.idcmodel.cy[1,1] += cy_beta*(rday - skew_coeffs['TDD_DATE']) + cy_alpha = skew_coeffs['TDD_CY_ALPHA'] + if cy_alpha is None: + hwcs.idcmodel.cy[1,1] += cy_beta*(rday - skew_coeffs['TDD_DATE']) + else: + hwcs.idcmodel.cy[1,1] = cy_alpha + cy_beta*(rday - skew_coeffs['TDD_DATE']) apply_tdd2idc2 = classmethod(apply_tdd2idc2) |