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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I find the shorter exposures I use when guiding, the better results I get. I tend to use 0.5 second exposures and when guiding on a moderately bright star. I get fairly decent results.
I don't think seeing conditions make too much difference in short focal length scopes though.
Back to OAGs, I have looking at the Lumicon GEG and would anyone recommend it over the Orion for any reasons?
