NGC7293 Helix (Ha + OIII)

 Posted: Aug 27th, 2025
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Technical Info
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, Siril, GraXpert, Adobe Photoshop
Exposure:
30 x 300" ISO/Gain: 121 - zwo Ha 7nm bin2
15 x 300" ISO/Gain: 121 - zwo OIII 7nm bin2
15 x 300" ISO/Gain: 121 - zwo OIII 7nm bin2
Orange, Bortle 6 zone:
 Adygeya Stanica Dahovskaya, Russia
 Aug 23rd, 2025
5 h 0 m
1385
Resolution: 1392x1001 px
Scale: 222 KB
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.
Current photo Updated
  27 Aug, 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)…
  21 Aug, 2025
  2 h 30 m
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'. I…
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