Quote:
Originally Posted by marki
The SBIG ST-i is both clean (class 1 chip) and sensitive. It also has the advantage of having a small mechanical shutter which allows proper darks to be shot. I have now had a play in maxim with the ST-i and where my CMOS guider used to cause mayhem with the guiding through hot pixels even after darks were applied, the ST-i has no such problems. All it needs is a simple auto dark and away it goes, super clean guide subs for maxim to work with.
Mark
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That sounds great Mark. That's exactly what can bug autoguiding with these CMOS based autoguiders. They track on a hot pixel by mistake or lock onto an artifact line instead of a star. They don't do proper autodarks either having no shutter or no electronic shutter it would seem.
Greg