iraf.net

NUMBER:	142
MODULE:	testphot.daophot.psf
SYSTEM:	V2.9
DATE:	Tue Feb  5 16:39:13 MST 1991
FROM:	davis

BUG:	The task psf in testphot.daophot was writing incorrect values of the
	zero point position of the psf 'XPSF' and 'YPSF' into the psf image
	header. Although this was not a problem for the constant psf fitting
	code, the variable psf fitting code was interpolating in the wrong
	place in the look-up table, resulting in a very strange looking psf
	fit. In effect the coordinate system of the look-up table was shifted
	with respect to the image.

STATUS:	The bug has been fixed in the ftp archive version of testphot and on
	all our local nodes (orion, gemini, ursa). Users can either get a
	new version of testphot from the archive or contact the IRAF group
	for a patch since only one file is affected.