M 101 galaxy "Pinwheel"

 Posted: Apr 13th, 2026
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Technical Info
Telescope/Lens: SharpStar 13028HNT
Camera: ZWO ASI585MC
Mount: МТ-120
Guide Scope: ED kenko 60 -400mm
Guide Camera: T7m
Software: NINA, Pixlnsight, ФШ
Exposure:
149 x 120" ISO/Gain: 200 - UV/IR
Orange, Bortle 6 zone:
 Ekaterinburg Rayon Ozera Gluhoe, Russia
 Apr 13th, 2026
4 h 58 m
135
Resolution: 5720x3512 px
Scale: 3494 KB
First light with the new tube, mounted it as a second scope next to the 300mm refractor.
Both tubes now have 585 cameras—mono on the 300mm, color on this one.
The main scope captured this same object in close-up, with dithering and meridian flips, while this one just ran a sequence. Later, I had to discard frames with dithering and flips, leaving 149 out of 180, but it was still worth it—the light gathering is fantastic.

Stacked with drizzle -2.

Tomorrow I'll process and post the version from the 300mm, and then a combined image from both tubes.
Updated
  22 Apr, 2026
  12 h 3 m
The result of combining data from two telescopes, captured in a single night on the same mount, except for the hydrogen data, which was taken earlier on 04/03.
Current photo
  13 Apr, 2026
  4 h 58 m
First light with the new tube, mounted it as a second scope next to the 300mm refractor. Both tubes now have 585 cameras—mono on the 300mm, color on this one. T…
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Comments

I wanted to get a telescope like that, but only the 150mm version. How is the collimation? Does it hold from the factory?
14 Apr, 2026 Reply

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