Quote:
Originally Posted by Peter Ward
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 'scopes...plus I don't normally take images of 1st Magnitude stars.
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Yep see them on my scope too on really bright stars. Those are a product of bright stars and getting reflections back from all the optical surfaces. I doubt there would be anything to worry about.