Pac-Man Emission Nebula

Posted: Aug 30th, 2025

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NGC

Technical Info

Telescope/Lens: Sky-Watcher 150/750

Camera: Canon 200 Da

Mount: Sky-Watcher HEQ5 PRO SynScan

Software: APT, DeepSkyStacker, FitsWork, FITStacker, Lightroom, StraNet2GUI, Photoshop, Topaz Denoise AI

Accessories: Baader MPCC Mark III, iOptron iPolar, Bahtinov mask

Exposure:

838 x 20" ISO/Gain: 3200

Red zoneLight Pollution:

Chelyabinsk, Russia

Aug 29th, 2025

PAC-MAN EMISSION NEBULA

Telescope/Lens: Sky-Watcher 150/750
Camera: Canon 200 Da
Mount: Sky-Watcher HEQ5 PRO SynScan
Software: APT, DeepSkyStacker, FitsWork, FITStacker, Lightroom, StraNet2GUI, Photoshop, Topaz Denoise AI
Accessories: Baader MPCC Mark III, iOptron iPolar, Bahtinov mask

Chelyabinsk, Russia
Light Pollution: Red zone

Exposure:
838 x 20" ISO/Gain: 3200

Pac-Man Emission Nebula NGC 281 (IC 11, LBN 616, Sh2-184) in the constellation Cassiopeia An HII region of ionized hydrogen, an active star-forming area. Various gas-dust clouds and globules are visible in the center of the nebula. Also in the center is the open star cluster IC 1590 Equipment and software: Camera Canon EOS 550 D. Telescope Synta SkyWatcher 150/750, F/5 Mount HEQ-5 Pro Bahtinov mask Polar alignment camera iOptron iPolar Baader MPCC Mark III coma corrector Software for acquisition: Astrophotography Tool SharpCap (polar alignment) EQ-Mode ASCOM Cartes Du Ciel Imaging from 28-29.08.2025, suburbs of Chelyabinsk, Kremenkul area Red zone light pollution. Bortle scale class 7 Total 838 Light frames at 20 seconds + 50 Dark frames + 50 Bias frames ISO 3200 Total integrated exposure Σ=4h39'20" Software for post-processing: DeepSkyStacker FitsWork FITStacker Lightroom StraNet2GUI Photoshop Topaz Denoise AI

Original size: https://deepskyhosting.com/pNgP89R
Author: googolplexplex

4 h 39 m

1011

Pac-Man Emission Nebula NGC 281 (IC 11, LBN 616, Sh2-184) in the constellation Cassiopeia
An HII region of ionized hydrogen, an active star-forming area.
Various gas-dust clouds and globules are visible in the center of the nebula.
Also in the center is the open star cluster IC 1590

Equipment and software:
Camera Canon EOS 550 D.
Telescope Synta SkyWatcher 150/750, F/5
Mount HEQ-5 Pro
Bahtinov mask
Polar alignment camera iOptron iPolar
Baader MPCC Mark III coma corrector

Software for acquisition:
Astrophotography Tool
SharpCap (polar alignment)
EQ-Mode
ASCOM
Cartes Du Ciel

Imaging from 28-29.08.2025, suburbs of Chelyabinsk, Kremenkul area
Red zone light pollution. Bortle scale class 7
Total 838 Light frames at 20 seconds + 50 Dark frames + 50 Bias frames
ISO 3200

Total integrated exposure Σ=4h39'20"

Software for post-processing:
DeepSkyStacker
FitsWork
FITStacker
Lightroom
StraNet2GUI
Photoshop
Topaz Denoise AI

Resolution: 5721x3768 px

Scale: 8112 KB