Thread: Alluna RC16
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Old 07-10-2015, 05:21 PM
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Peter Ward
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Peter Ward is offline
Join Date: Dec 2007
Location: The Shire
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Originally Posted by Octane View Post
Peter, what are those doughnuts around Fomalhaut? There's three overlaid on top of each other, each getting bigger?

I suspect off axis reflections from the field corrector..or possibly the CCD window/filters.

In time I'll try out all configurations (eg mirrors only, reducer/corrector) to see whether there is a difference.

I'm not fussed as I've seen similar in my other ' I don't normally take images of 1st Magnitude stars.
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