Quote:
Originally Posted by Hagar
I think the banding may be an aberation which may be removed by bias files but I have posted a querie on the QHY forum. Time will tell.
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Doug,
It may help if you post one of your bias frames or ping me an email offline. Probably a stupid question, but you're not confusing column defects with banding are you? If the bias frame contains considerable banding, you're more than likely dealing with electrical interference. The bias being a zero second exposure, its guarenteed to not be thermal noise related. Check your USB cable is not too close to power etc, perhaps route them via alternate paths to separate/sheild them as much as possible to see if that changes the situation. It could be camera related, but out of the few times of assist people with this problem it has turned out to be interference or dodgy cable. Maybe worth investigating.