Quote:
Originally Posted by Bassnut
Guide exposures in urban skies less than 2 secs is not a good idea, your then chasing seeing, which no mount can follow without AO. A jumpy star at 0.7 seconds will give erratic guide corrections, 2 secs smooths them out.
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In general I agree (well, it's about 1 second minimum for me for normal guiding). As it happens I do use AO and that's why I guide at 0.1 seconds. I was just pointing out how sensitive the Lodestar was.
Steve