NGC7293 Helix

Ryjov Aleksey

2714944

Deep Sky

Aug 21st, 2025

1296

NGC 7293

Resolution:: 1000x853 px
File size:: 114 KB

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Photo description / processing

One of the closest planetary nebulae. It is located at a distance of only 650 light-years. The diameter is about 2.5 light-years. The angular size is 12'x25'. It is difficult to observe at mid-latitudes of Russia. Lum clearly needs to be replaced with Ha, I will reshoot and replace it! And I will definitely add more material. The object deserves it.

Technical information

Telescope/Lens: Askar SQA 106 мм f/4.8
Camera: ZWO ASI 294 MM Pro
Mount: Ioptron HAE 29 C
Guide Scope: Askar 52 мм F4
Guide Camera: ZWO ASI 120 MM mini
Software: SharpCap 4.0, DSS, Siril, GraXpert, Adobe Photoshop

Location: Адыгея, станица Даховская, Россия

Light pollution

Green, Bortle 4 zone

Date taken: Aug 19th, 2025

Exposure

10 × 300″ · ISO/Gain: 121 · - zwo R bin2
10 × 300″ · ISO/Gain: 121 · - zwo G bin2
10 × 300″ · ISO/Gain: 121 · - zwo B bin2

Total exposure: 2 h 30 m

Photo versions

Updated

NGC7293 Helix (Ha + OIII)

Aug 27th, 2025

5 h 0 m

Switched from LRGB to the Ha+OIII option. It works great for this nebula. There are still about six or seven hours left to accumulate (hopefully in September). The detail may not be as good, in this camera mode the pixel size is 4.63 µm, but on the plus side there is increased light gathering and correspondingly faster signal accumulation.