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If I didn’t use calibration frames ( Flats ) I would be cropping 40% of my images that’s how bad Vignetting affects my image train with my new rigs ( mainly due to the new TS GPU coma corrector)
When I used my old Baader Mk3 coma corrector during my DSLR days some years ago , Vignetting wasn’t too bad and I only needed to crop 10% due to Vignetting and some coma affected stars. I never used to take Flats with the DSLR , cropping was my answer and also the Baader Mk3 never completely eliminated coma to the edges. However , the new TS GPU coma corrector eliminates coma all the way to the edges, provides tight halo free stars , but unfortunately introduced huge Vignetting.Sometimes you can’t have the best of both worlds.
Flats are my friend in Astrophotography and I wouldn’t swap my TS GPU coma corrector for anything, it’s tremendous.
The Huion dimmable led panel is not the perfect solution for taking Flats , there are many excellent Astro Flats panels and Flats boxes on the market but my set up works for me and has done for the past 3 years or so
Alex, in the Ascom or ZWO camera driver , make sure you switch the dew heater “On” for both your 2600 cameras regardless of seasons, I queried this a few years ago on the ZWO forum and the overwhelming response was “Yes” leave it “On” all year.
Cheers
M
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