diff options
Diffstat (limited to 'updatewcs')
| -rw-r--r-- | updatewcs/dgeo.py | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/updatewcs/dgeo.py b/updatewcs/dgeo.py index 8f6b4d4..42001f3 100644 --- a/updatewcs/dgeo.py +++ b/updatewcs/dgeo.py @@ -10,7 +10,7 @@ class DGEOCorr(object): Purpose ======= Defines a Lookup table prior distortion correction as per WCS paper IV. - It uses a reference file defined by the NPLOFILE (suffix 'NPL') keyword in the primary header. + It uses a reference file defined by the NPOLFILE (suffix 'NPL') keyword in the primary header. Algorithm ========= @@ -251,8 +251,8 @@ class DGEOCorr(object): for i in range(1, naxis+1): si = str(i) kw_val1['NAXIS'+si] = npol_header.get('NAXIS'+si) - kw_val1['CRPIX'+si] = kw_val1['NAXIS'+si]/2. - kw_val1['CDELT'+si] = float(npol_header.get('ONAXIS'+si))/ (kw_val1['NAXIS'+si] * binned) + kw_val1['CRPIX'+si] = (kw_val1['NAXIS'+si]-1)/2. + kw_val1['CDELT'+si] = float(npol_header.get('ONAXIS'+si))/ ((kw_val1['NAXIS'+si]-1) * binned) kw_val1['CRVAL'+si] = (npol_header.get('ONAXIS'+si)/2. + \ sciheader.get('LTV'+si, 0.)) / binned |