iraf.net

NUMBER:	192
MODULE:	photcal.fitparams
SYSTEM:	V2.10
DATE:	Thu Dec 17 17:22:04 MST 1992
FROM:	davis

BUG:	The fitparams task could produce incorrect weight, chi, and fitted
	parameter error estimates in the case that weighting=photometric, 
	nreject > 1, and low_reject > 3.0 || high_reject > 3.0.
	This problem was occuring because the weight array was not
	being reinitialized correctly after each iteration of the rejection
	cycle. The actual problem was in the inlfit package routine
	inlfit$inreject.gx.

STATUS:	The bug is fixed for the next release of IRAF. The work around is
	to use interactive bad point deletion with the graphics cursor instead
	of the automatic iterative rejection algorithm.