Hi all: We've noticed that the CCD temps recorded in MaxIm DL FITS headers on SBIG cameras have a problem. Here is some data: DSO-17 STL-11000 -10.2030 and -9.7878 Set Temp -10 Yerkes STL-1001 -10.2030 and -9.7878 Set Temp -10 RCOP STL-3200 -24.9687 and -25.0000 Set Temp -25 AURT STL-6303 -23.5570 and -24.0144 Set Temp -24 The problem is that for a given setpoint, only two values are ever recorded in the FITS header. Examples are above. With our Apogee cameras, we get random temps around the setpoint, as one would expect. For example, if the setpoint for an STL-11000 is -10, the two values above are the ONLY ones ever recorded in the FITS headers. This has been going on for many years (perhaps forever). I've also seen this problem on our ST-7 in archival data (which is why I know the problem has been going on for a while). The versions of MaxIm used are 4 through 6. Looks to me like you've got a data type problem for the CCD temp field in the headers.