Emission Nebula Pac-Man (Pac-Man)

Emission nebula Pac-Man (Pac-Man) NGC 281 (IC 11, LBN 616, Sh2-184) in the constellation Cassiopeia. An HII region of ionized hydrogen, an area of active star formation. In the center of the nebula, various gas-dust clouds and globules are visible. Also in the center is the open star cluster IC 1590. Equipment and software: Camera Canon EOS 550D. Telescope Synta SkyWatcher 150/750, F/5. Mount HEQ-5 Pro. Bahtinov mask. Polar finder camera iOptron iPolar. Coma corrector Baader MPCC Mark III. Capture software: Astrophotography Tool, SharpCap (polar alignment), EQ-Mode ASCOM, Cartes Du Ciel. Imaging from 28-29.08.2025, suburb of Chelyabinsk, Kremenkul area. Red zone light pollution. Class 7 on the Bortle scale. Total 838 light frames of 20 seconds each + 50 dark frames + 50 bias frames, ISO 3200. Accumulated signal Σ=4h39'20". Post-processing software: DeepSkyStacker, FitsWork, FITStacker, Lightroom, StarNet2GUI, Photoshop, Topaz Denoise AI.