cygnus_milkey_way

This image was meant to test a few things, the first was test the tangential and sagittal astigmatism of the sony 35mm gm f1.4, which it does have. It's better corrected than other lenses I have tried, but it's still there (wide open). The second thing I was testing was the ioptron cem26ec unguided tracking ability. I mainly shoot wide field and I intended to shoot the Veil Nebula with a 400mm lens, this would have shown any tracking errors better than a 35mm lens, but like an idiot I left this lens at home. I'm still getting oblong stars but in fairness I had to zoom in to 700% to see it. This image was made from 10 light frames, 10 dark frames, 10 Flat frames, 10 bias frames, processed in pixinsight and photoshop. The camera was a Sony A7R4, exposure was 4 mins @ iso640

Done