Sh2-157, NGC7635 in SHO palette

SH2-157, the Lobster Claw Nebula, is an emission nebula located about 11,000 light-years away in the constellation of Cassiopeia.

According to SHO palette, red/orange and predominantly yellow regions of the nebula evinced a very large H II region while the blue-colored are predominately regions featured by the emission of light from molecular oxygen.

On the top NGC 7635 – the Bubble Nebula, and on the middle the star cluster NGC 7510.

Astrobin:

XIUART

Art, Asiair Plus, AsiAir Pro, Astronomic Ha 1,25" filter, Astronomic Oiii 1,25" filter, Astronomic Sii 1,25" filter, Astrophotography, Deep Sky, Deepsky, Narrowband, NGC7635, SH2-157, SHO, SHO Palette, Sky-Watcher EQM-35 Pro Synscan GOTO, William Optics Redcat 51, William Optics v1.5 RedCat 51 APO, Xiuart, ZWO ASI120mm Mini, ZWO ASI1600mm Pro, ZWO EFW 8x1,25"