Andromeda. August 1, 2021

 Posted: Aug 2nd, 2021
Technical Info
Telescope/Lens: Sky-Watcher bk 804
Camera: ZWO ASI 290 MC
Mount: Sky-Watcher AZ-GTE
Software: DeepSkyStacker, Adobe Photoshop.
Exposure:
226 x 3.633" ISO/Gain: 458
Orange zoneLight Pollution:
 Lesnoy, Russia
 Aug 1st, 2021
14 m
1960
Resolution: 1754x1008 px
Scale: 7635 KB
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Comments

Anna, what's in your aperture??? Look at the bright stars—the diffraction pattern indicates something foreign in the aperture.
3 Aug, 2021 Reply
Anna Shekurova Replied to Smirnov Andrey
I think it's due to the telescope itself; it has significant aberration.
4 Aug, 2021 Reply
Anna Shekurova Replied to Smirnov Andrey
I think it's because of the telescope itself; it has strong aberration.
4 Aug, 2021 Reply
Smirnov Andrey Replied to Anna Shekurova
None of the aberrations or their combinations can produce such an image. Especially since this wasn't present in your previous photos. Look carefully—maybe something extra has appeared in the aperture, or perhaps some branches got in the way during the shoot.
5 Aug, 2021 Reply
Smirnov Andrey Replied to Smirnov Andrey
"проводили" should be read as "провода". Damn phone autocorrect!
5 Aug, 2021 Reply
Anna Shekurova Replied to Smirnov Andrey
Well, it's possible. In the dark, the branches are especially thin and not very visible, so they could have easily gotten in. I don't rule out that possibility.
5 Aug, 2021 Reply

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