Group M81 in the constellation Ursa Major

M81 Group in the constellation Ursa Major
Spiral galaxy "Bode's Galaxy" (Messier 81, NGC 3031): spiral arms are clearly visible.
Barred spiral galaxy "Cigar Galaxy" (Messier 82, NGC 3034): red color indicates massive outflows of interstellar gas.
Peculiar galaxy "Garland" NGC 3077: lacks a clear shape, distorted by the gravity of its neighbors.

Equipment:
Camera Canon EOS 200 Da.
Telescope Synta SkyWatcher 150/750, F/5
Mount HEQ-5 Pro
Bahtinov mask
Polar finder camera iOptron iPolar
Coma corrector Baader MPCC Mark III
Guidescope SVBONY 60/240, F/4
Guide camera ZWO ASI 120 Mini
Flat panel Gemini 190 mm

Capture software:
Astrophotography Tool, SharpCap (polar alignment), EQ-Mode, ASCOM, Cartes Du Ciel, PHD2

Suburb of Chelyabinsk, Kremenkul area.
Red light pollution zone. Class 7 on the Bortle scale.

Capture on 18-19.05.2026
Total 114 Light frames at 90 seconds each + 20 Dark frames + 20 Bias frames + 20 Flat frames
ISO 800

Capture on 20-21.05.2026
Total 88 Light frames at 90 seconds each + 20 Dark frames + 20 Bias frames + 20 Flat frames
ISO 800

Total integration time Σ=5h03'00"

Post-processing software:
DeepSkyStacker, FitsWork, FITStacker, Lightroom, StraNet2GUI, Photoshop, Topaz Denoise AI