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M 101 galaxy "Pinwheel"

Category:Deep Sky
Published:
546
M 101 galaxy "Pinwheel"NGC 5447NGC 5449NGC 5450NGC 5453NGC 5458NGC 5451NGC 5455NGC 5457NGC 5461NGC 5462NGC 5471
Resolution:
3721x2090 px
File size:
1074 KB

Photo description / processing

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.

Technical information

Telescope/Lens
Прямофокусник 300/996 "Изд.No3", SharpStar 13028HNT
Camera
QHY QHY5III585M, ZWO ASI585MC
Mount
МТ-120
Guide Scope
Kenko ED 60/400
Guide Camera
T7M
Accessories
Sharpstar 0.95x MPCC, Dual Filter Wheel
Software
N.I.N.A., Pixinsight, Adobe Photoshop
Location
Екатеринбург, район озера Глухое., Россия

Light pollution

Orange, Bortle 6 zone

Date taken

Exposure

  • 30 × 180″ · ISO/Gain: 9 · Touptek G 36мм ·
  • 30 × 180″ · ISO/Gain: 9 · Touptek R 36мм ·
  • 30 × 180″ · ISO/Gain: 9 · Touptek B 36мм ·
  • 31 × 300″ · ISO/Gain: 9 · Antlia Ha 3nm Highspeed-36 мм ·
  • 149 × 120″ · ISO/Gain: 200 · UV/IR ·

Total exposure: 12 h 3 m

Photo versions

M 101 galaxy "Pinwheel"
Current photoUpdated
M 101 galaxy "Pinwheel"

Apr 22nd, 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.

M 101 galaxy "Pinwheel"
M 101 galaxy "Pinwheel"

Apr 13th, 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. 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.

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Comments

poiskovik_RZN
An interesting combination, but doesn't it feel like the ASKAR data might blur the details captured with the large aperture? I've actually been thinking about a similar experiment, but with simpler equipment.
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