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-rw-r--r--wcsutil/wcscorr.py8
1 files changed, 4 insertions, 4 deletions
diff --git a/wcsutil/wcscorr.py b/wcsutil/wcscorr.py
index 4f5a05d..fae48ce 100644
--- a/wcsutil/wcscorr.py
+++ b/wcsutil/wcscorr.py
@@ -81,10 +81,10 @@ def init_wcscorr(input, force=False):
# Check to see whether or not there is an OPUS alternate WCS present,
# if so, get its values directly, otherwise, archive the PRIMARY WCS
# as the OPUS values in the WCSCORR table
- if 'O' in used_wcskeys:
- wkey = 'O'
- else:
- wkey = ' '
+ if 'O' not in used_wcskeys:
+ altwcs.archiveWCS(fimg,('SCI',extver),wcskey='O', wcsname='OPUS')
+ wkey = 'O'
+
wcs = stwcs.wcsutil.HSTWCS(fimg, ext=('SCI', extver), wcskey=wkey)
wcshdr = wcs.wcs2header(idc2hdr=idc2header)