Horsehead Nebula

Posted: Nov 20th, 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:

676 x 15" ISO/Gain: 3200

259 x 20" ISO/Gain: 3200

Red zoneLight Pollution:

Chelyabinsk, Russia

Nov 19th, 2025

HORSEHEAD 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:
676 x 15" ISO/Gain: 3200 
259 x 20" ISO/Gain: 3200

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

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

4 h 15 m

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

Resolution: 4697x3263 px

Scale: 1369 KB