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Old 06-08-2014, 04:27 PM
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multiweb (Marc)
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multiweb is offline
Join Date: Oct 2007
Location: Sydney
Posts: 21,926
Originally Posted by Shiraz View Post
yep, it was bright. I was doing testing, so chose a bright guide star by just scanning around and then imaged whatever happened to be in the field at the time.
I imagine that finding a bright enough guidestar would be a major practical issue.
In practice I think the best guiding rates I've achieved were around the 4Hz mark. Good enough to correct for wind buffeting and mount errors. But I doubt it did any improvement with seeing. Although at long FL 3m and over at an image scale of say 0.7 second of arc per pixel your stars are definitely not as fat. So good for any typical SCT with a large aperture.
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