IC1805

Andrej_Ka

45471

Deep Sky

Nov 25th, 2025

537

IC 1824NGC 896NGC 1027IC 1795IC 1805

Resolution:: 3806x2141 px
File size:: 2783 KB

Show astrometry on hover

Photo description / processing

First attempt at shooting with a cooled astro camera.

Technical information

Telescope/Lens: Askar FMA180 Pro
Camera: ZWO ASI585MC Pro
Mount: Juwei 17-100 Mount
Guide Scope: 40mm
Guide Camera: Zwo asi120mm mini
Accessories: ZWO ASIAIR Mini
Software: Siril

Location: Санкт-Петербург, Россия

Light pollution

Orange, Bortle 6 zone

Date taken: Nov 21st, 2025

Exposure

35 × 180″ · ISO/Gain: 200 · Sv220 · Nov 21st, 2025

Total exposure: 1 h 45 m

Comments

Oleg Novoselov

You are shooting with a gain of 200!!! Look at the graphs, that's a single gain, but you need HCG mode, which is gain 252. In that mode, the dynamic range is higher and the noise is lower. Anyway, congratulations on your first light.

Nov 26th, 2025

Andrej_KaReply to Oleg Novoselov

Check out the new graphs for the ZWO ASI585MC/MM cameras. The new HCG is at 200, replacing the old 252. All the changes are already in the software. Now, the dynamic range is also 12 stops instead of 11 on HCG.

Nov 26th, 2025

Oleg NovoselovReply to Andrej_Ka

I didn't know, but I think I visited the new website.

Nov 26th, 2025