Crescent Nebula (NGC 6888)

Strannick

1321665

Deep Sky

Sep 24th, 2025

1199

NGC 6874NGC 6881NGC 6888

Resolution:: 4044x2757 px
File size:: 2990 KB

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Technical information

Telescope/Lens: Askar 65 PHQ
Camera: ZWO ASI294MM Pro
Mount: JUWEI 14
Guide Scope: ZWO 30mm f/4 Guide Scope
Guide Camera: ZWO ASI120MM Mini
Software: ZWO ASIAIR OS, Siril, GraXpert, Pixinsight

Location: Выкса, Россия

Light pollution

Red, Bortle 7 zone

Date taken: Sep 22nd, 2025

Exposure

19 × 300″ · ISO/Gain: 120 · Antlia 3nm Narrowband H-Alpha (Ha) · Sep 22nd, 2025
23 × 300″ · ISO/Gain: 120 · Antlia 3nm Narrowband Oxygen III (OIII) · Sep 22nd, 2025

Total exposure: 3 h 30 m

Photo versions

Updated

Crescent Nebula (NGC 6888)

Jul 27th, 2026

3 h 30 m

I decided to try rethinking the processing using only free software—to see if I could achieve a result at least as good as with PixInsight. The colors turned out much softer, but the details don't seem to have decreased. Perhaps this processing looks more natural.