On Monday 13 March 2006 20:26, Carrie MacTavish wrote: | problem is that kst tells me all 18 cols of | data (2001 elements each) are identical in this file They are identical, at least according to the "fv" (Fits Viewing) program which is distributed here: http://heasarc.nasa.gov/ftools/fv/ Hmmm... -Ted