NGC 281

 Posted: Mar 26th, 2026
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NGC
IC
HD
Technical Info
Telescope/Lens: Askar 71F
Camera: ZWO ASI585MC Pro
Mount: JUWEI 14
Guide Scope: ToupTek GS-200 AR
Guide Camera: ZWO ASI662MC
Software: Siril, Photoshop, Lightroom, StarNet++
Accessories: CAA, EAF, EFW, ASIAIR MINI, Askar Reducer x 0.75, Gemini PowerBox
Exposure:
79 x 300" ISO/Gain: 200 - Optolong L-eXtreme
Orange, Bortle 6 zone:
 Samara, Russia
 Jan 17th, 2026
6 h 35 m
90
Resolution: 3437x1933 px
Scale: 2647 KB
I added more signal, stacked it properly, and boosted the oxygen.
Current photo Updated
  26 Mar, 2026
  6 h 35 m
I added more signal, stacked it properly, and boosted the oxygen.
  16 Mar, 2026
  5 h 20 m
Continuing to explore technical nuances, it turns out the 585 is very finicky about calibration temperature, unlike the 533. A five-degree difference is no prob…
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Beauty!
26 Mar, 2026 Reply

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