Sh2-170 is an emission nebula in the constellation Cassiopeia. Its main emissions are in Ha wavelength with a dim OIII area in the center part. The nebula is associated with a small star cluster in its center.
The Ha data were captured in 2019 with a TS 130/910 Photoline apo and an ASI1600mmp. The OIII and RGB data are from 2020 with the same setup and a TSRED379 reducer in the optical train.
Full resolution: https://astrob.in/full/9p1e0r/0/
50 x 200 s Ha
23 x 300 s OIII
100 x 30 s L
40 x 30 s red
39 x 30 s green
40 x 30 s blue