SYSTEM: V2.10
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.