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Old 04-06-2019, 11:47 AM
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Atmos (Colin)
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Join Date: Aug 2011
Location: Melbourne
Posts: 6,980
Quote:
Originally Posted by cometcatcher View Post
Hi Ben. I have the same problem as you but with a slightly different setup. I have a Kson ED80 and ZWO ASI 183mm Pro. With blue filter it is badly bloated. The red and green filters are fine. These scopes are not fully APO quality I'm afraid.

I'm in the process of experimenting with additional filters. So far I have found the Baader Semi-Apo filter stacked over the blue filter to help a lot. I will keep experimenting to see how it turns out.
You’re also using a VERY demanding camera for colour correction. Tiny pixels and very high QE stress even some of the better triplets on the market.
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