iraf.net

NUMBER:	179
MODULE:	daophot.allstar
SYSTEM:	V2.10
DATE:	Wed Sep 16 14:37:46 MST 1992
FROM:	davis

BUG:	If 1) cache=no, or cache=yes and memory preallocation fails for one or
	more of the data, scratch or weight arrays, 2) one or more of the
	groups has greater than maxgroup stars, 3) regrouping is 
	performed on the too large group and 4) the first star in the
	next non-regrouped group has a y value less than the y value of
	the first star in one of the regrouped groups, allstar can
	fail with an 'attempt to access the scratch, weight, or data pixels
	randomly' error.

STATUS:	The bug is fixed in 2.10.2. Possible work arounds include: 1) setting
	cache=yes instead of no if the machine has enough memory and swap
	space 2) setting the maxgroup parameter to a larger value than the
	default value of 60 3) decreasing the fitting radius somewhat since
	this affects the grouping process.