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  #1  
Old 28-06-2015, 06:00 PM
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Internal reflections

I'm seeking some advice on internal reflections in the imaging train - just wondering if there is any information out there on how to track down the cause and potentially eliminate them. This image was taken with my SN10 with a Televue Paracorr and QSI683. Only an issue near a bright star so far but it would be good if there is a simple fix.
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  #2  
Old 28-06-2015, 06:03 PM
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multiweb (Marc)
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That looks like those Schmidt reflections with the hyperstar. Same shape. The only way to get rid of them is offset then reject at stacking time.
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  #3  
Old 28-06-2015, 06:06 PM
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Does that mean it is created by light reflecting off the inside of the corrector plate?
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  #4  
Old 28-06-2015, 06:15 PM
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It does look a lot like the one in this link...

http://www.robertreeves.com/repair1.htm
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  #5  
Old 07-07-2015, 07:34 PM
FrankyT (Frank)
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This is probably irrelevant - I have a an 8 inch f5 reflector and when I use the f5 coma corrector I get reflections of bright stars when they are in the field of view. I havent worked out why it happens but are you using a coma corrector? If so try without it.
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  #6  
Old 07-07-2015, 07:45 PM
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Yes - I'm using a Televue Paracorr.
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