From 49ed98f36b448b2ed06df373df0df3615395d45a Mon Sep 17 00:00:00 2001 From: hack Date: Wed, 2 Apr 2014 20:03:23 +0000 Subject: 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 --- lib/stwcs/updatewcs/corrections.py | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'lib/stwcs/updatewcs') 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) -- cgit