iraf.net

NUMBER:	333
MODULE:	daophot.psf
SYSTEM:	V2.10
DATE:	Wed Mar 20 13:59:27 MST 1996
FROM:	davis

BUG:	If the daopars function parameter is set to auto and the best fitting
	function is either moffat25 or moffat15, the psf model look-up tables
	if any will be computed incorrectly. The problem occurs because
	only the 3 fitted parameters (the beta parameter is held fixed) are
	being saved and restored correctly. The array element that should
	hold the fixed beta value is instead occupied by the equivalent
	parameter for the last computed function the penny function.

STATUS:	Fixed for the next release of iraf and in the version of daophot in the
	external addon package digiphotx. The workaround is to run psf twice,
	once to determine the best fitting function (as this is being
	determined correctly), and then again with the function parameter
	set to the selected function.