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Old 28-05-2018, 12:15 PM
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Marke (Mark)
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Join Date: Nov 2009
Location: Sydney
Posts: 1,193
Quote:
Originally Posted by kosborn View Post
I have the 31mm unmounted ZWO filters. What did I do wrong...?


Kevin
Nothing wrong but they have terrible large ring artifacts caused by reflections off the edge . I blacked out the edge on mine which helped a little but i ended up replacing them all due to the reflections they cause.
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