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Paul
Don’t be too crazy about your guiding figures, my images are the same at 0.90 arc sec error as they are at 1.50 arc sec error after 5 minute subs
Sub 1 arc sec guiding is excellent and 0.50 arc sec guiding is in unbelievable
Seeing conditions make all the difference
I was guiding on Friday night t 0.83 to 0.90 arc sec with my 8” f5 wind sock with nearly 14 kg on board only because of seeing conditions. The next night back to 1.30 to 1.50
My focusing is primitive but it works for me, I use the FWHM read outs on BYEOS. I avoid bright stars and always pick a dimmer star at 1.80 to 2.50 magnitude and stand there for 2 minutes tweaking the focuser until I get the lowest reading , then take a 30 sec test image to confirm
Never used a Batinov mask
Your producing some really nice images
Cheers
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