M 101 Pinwheel Galaxy

Posted: Jun 10th, 2026

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NGC

Technical Info

Telescope/Lens: Canon EF-S 55-250mm

Camera: Canon 1100Da

Mount: Штатив

Guide Scope: ручное ведение

Software: DSS, Siril, StarNet++ GUI, Adobe Lightroom, Adobe Photoshop.

Accessories: ДП RC-60E3

Exposure:

971 x 2.5" ISO/Gain: 3200 - f5.0, 135mm

Yellow, Bortle 5 zone:

S Rameno Syzranskiy R-N Samarskaya Obl, Россия

Jun 10th, 2026

40 m

113

Resolution: 1573x1080 px

Scale: 400 KB

dmitryspn63

The Pinwheel Galaxy M 101.

The result is certainly not the best; after all, there was too little integration time for such a faint object, and on top of that, without calibration frames, DSS introduced a lot of noise and banding, so I had to work on it.

I don't think I'll return to it.

Crop of the frame.

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Comments

Megapups

Well, my respects. You managed to bring out the spiral arms quite well for this scale. But I think you won't be able to reveal much more without higher magnification and longer exposure per frame. Still, an excellent result for your conditions.

10 Jun, 2026 Reply

Megapups

America also turned out quite well, by the way — I was able to bring out the Alpha and oxygen. But I understand that this is already an issue with the stack itself, since there’s that strange band on the right. Still, the result is good.

10 Jun, 2026 Reply

Dmitryspn63 Replied to Megapups

Thank you for the feedback. I agree about M101 — it needs more scale. And you're right about America regarding the band. Actually, I think I'll return to it to gather more data for a crop of the Wall and the Pelican.

10 Jun, 2026 Reply

Megapups Replied to Dmitryspn63

Not a bad idea.
Eh, I wish I had at least clear skies — it's been cloudy for a month now, and I had so many plans to shoot.

10 Jun, 2026 Reply

Dmitryspn63 Replied to Megapups

I understand, I’ve had long rains myself, and now there’s only a month left for all the ideas ( so I’m thinking about what other objects to shoot, but I have no ideas.. I’m considering M16 for now, and I’m also planning a false SHO with it :)

10 Jun, 2026 Reply

Megapups Replied to Dmitryspn63

I think it's a good idea.
Maybe when I have the means, I'll do something like that too.

10 Jun, 2026 Reply

Dmitryspn63 Replied to Megapups

Looking forward to your new work) Clear skies to you

10 Jun, 2026 Reply

Megapups Replied to Dmitryspn63

Thank you, and you too.

10 Jun, 2026 Reply

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