Horsehead Nebula

 Posted: Nov 20th, 2025
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NGC
IC
HD
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:
676 x 15" ISO/Gain: 3200
259 x 20" ISO/Gain: 3200
Red, Bortle 7 zone:
 Chelyabinsk, Russia
 Nov 18th, 2025
4 h 15 m
167
Resolution: 4697x3263 px
Scale: 1369 KB
Dark nebula "Horsehead Nebula" (Horsehead Nebula, IC 434, Barnard 33) and the ionized hydrogen HII region
Emission nebula "Flame Nebula" (Flame Nebula, NGC 2024, Sh2-277, CED 55P)
Reflection nebula NGC 2023 (LBN 954)
Star Alnitak Zeta Orionis (ζ Ori)

Equipment and software:
Camera Canon EOS 200 Da.
Telescope Synta SkyWatcher 150/750, F/5
Mount HEQ-5 Pro
Bahtinov mask
Polar alignment camera iOptron iPolar
Coma corrector Baader MPCC Mark III

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

Imaging from 27.10.2025, suburbs of Chelyabinsk, Starokamyshinsk area
Red light pollution zone. Class 7 on the Bortle scale
Total 571 Light frames of 15 seconds + 40 Dark frames + 40 Bias frames
ISO 3200

Imaging from 18-19.11.2025, suburbs of Chelyabinsk, Starokamyshinsk area
Red light pollution zone. Class 7 on the Bortle scale
Total 105 Light frames of 15 seconds + 40 Dark frames
Total 259 Light frames of 20 seconds + 20 Dark frames
+ 40 Bias frames
ISO 3200

Total accumulated signal Σ=4h15'20"

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