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Concentric rings

Posted: Tue Sep 21, 2021 3:03 pm
by Ammo Al
Hello , I have just started using a Svbony 205 for planetary imaging . When i process the video through Astrostackkert or Registax 6 i get concentric rings appear on the planetary image . At first i thought it was the Barlow lens but this happens without it . Any suggestions would be appreciated . Alan

Re: Concentric rings

Posted: Wed Sep 22, 2021 1:27 pm
by admin
Hi,

I think the effect is know as 'onion rings' (unfortunately not the tasty fried snack version). If you search for 'planetary imaging onion rings' then you will find lots of discussions of the same problem, along with (hopefully) some useful suggestions to fix the issue.

cheers,

Robin

Re: Concentric rings

Posted: Wed Sep 22, 2021 3:23 pm
by Ammo Al
Thank you :D