[g__day (Matthew)]

This is a wierd one, last night I took some 7,200 second dark frames. The set up is PC running DSLR Shutter -> Shoestring Astronomy DSUB -> Canon 400D via a Bulb cable. Shots are downloaded from the camera using a USB cable and using Canon's Zoombrowser EX software.

I've done shots of 1,200 seconds, 2,400 seconds and 3,600 seconds fine - but when I tried 7,200 (which seems to work okay) Canon ZoomBrowser reports the shots are each 694.4 seconds?

Any idea how Canon got it confused and what I may be able to do?

Matthew