NINA's Autofocus Donuts: If It Won't Focus, Make a Hole

Описание: If that DSO won't focus, and you use NINA, you can make a hole in the field of view and autofocus around it! The ability of NINA to create focus donuts is one of its most powerful autofocus tricks.

You can see the full res star cluster, NGC 7078, used in this video at the Sky Story Astrobin: https://www.astrobin.com/16s7hr/

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