Sh2-157 (Crab Claw + Bubble)

 Posted: Mar 25th, 2026
Technical Info
Telescope/Lens: Askar 107PHQ
Camera: QHY268M
Mount: ZWO AM5
Guide Scope: QHY OAG
Guide Camera: Touptek GPM462M
Software: Pixinsight, GraXpert, N.I.N.A, Photoshop
Accessories: askar 0.7x reducer
Exposure:
16 x 600" ISO/Gain: 56 - Ha
16 x 600" ISO/Gain: 56 - OIII
16 x 600" ISO/Gain: 56 - SII
Yellow, Bortle 5 zone:
 Merjanovo Rostovskaya Oblast, Russia
 Sep 20th, 2025
8 h 0 m
13
Resolution: 4000x2669 px
Scale: 7479 KB
SH2-157 The Crab's Claw and a lot around it.
It was shot on a leftover basis after the main summer targets. An extremely tricky object to process in the context of harmonious palettes. None of the SHO versions have pleased me so far. The current one is H+S-O-O, and even then, I can't say I'm completely happy with it.
I definitely plan to gather more signal this summer—maybe a new version, and a colorful one, will come out.

Discussion in the astrochat - https://t.me/dalniycosmos_chat , there are many of us there, haters are especially welcome)
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