Andromeda Nebula with hydrogen and oxygen

n0r1s

1611501

Deep Sky

Oct 22nd, 2026

362

Andromeda Nebula with hydrogen and oxygen

NGC 206NGC 205NGC 221NGC 224

Resolution:: 4780x3012 px
File size:: 9926 KB

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Photo description / processing

Reassembled my dream Andromeda, included in the stack frames that I shot in 2023 on the Tak. Ended up with more than 73 hours of data, of which more than half in hydrogen-oxygen. Managed somehow to pull out SDSO1 better, and the emission nebulae in the galaxy. I'm happier with this version than the old one. P.S. The little crosses are because my cable organizer on the RASA is like that =)

Technical information

Telescope/Lens: Celestron RASA 8, Takahashi FSQ-85EDX
Camera: ZWO ASI071MC Pro
Mount: ZWO AM5
Guide Scope: Sky-Watcher 8x50 Finder Scope
Guide Camera: QHY QHY5L-II-C
Accessories: 0.73x Reducer, Mele PC, Celestron SCT Focuser
Software: Pixinsight

Location: Нижний Новгород, Россия

Light pollution

Green, Bortle 4 zone

Date taken: Sep 30th, 2025

Exposure

67 × 600″ · ISO/Gain: 90 · Astronomik L-2 + RASA8 · Sep 30th, 2025
289 × 600″ · ISO/Gain: 90 · IDAS NBZ-II + RASA8 · Sep 30th, 2025
20 × 30″ · ISO/Gain: 90 · Astronomik L-2 + RASA8 · Sep 30th, 2025
83 × 600″ · ISO/Gain: 90 · Optolong L-Pro + Takahashi FSQ-85EDX + x0.73 Reducer · Sep 30th, 2025

Total exposure: 73 h 20 m

Photo versions

Current photoUpdated

Andromeda Nebula with hydrogen and oxygen

Oct 22nd, 2026

73 h 20 m

Andromeda Nebula with hydrogen and oxygen

Oct 9th, 2025

59 h 40 m

My longest work, which took 2.5 months, 12 clear nights, and almost 60 hours of selected raw shots. The goal was to capture so much that the desire to return to this galaxy would not arise again anytime soon. An additional goal was to somehow reveal the recently discovered oxygen arc. Well, what came out, came out.