Sh2-170 - Nebula in Cassiopeia taken in H-Alpha+RGB

Sh2 170 HaRGB

Sharpless 170 is a diffuse HII region ionized by a single main sequence O-star located near the periphery of a small dense molecular cloud at a distance of ~2 kpc.

Scope: Planewave 12.5" CDK
Camera: Apogee U16M w Astrodon Gen II filters
Mount: Paramount ME guided w an SBIG ST-402ME and Astrodon MMOAG
32 x 20 min of H-Alpha
15/8/10 x 10 min each of RGB
Acquired with CCD-Commander and TheSkyX
Calibration and colour combine in PixInsight
Further processing including the blending of the H-Alpha into the RGB  in PS CC

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Here is the H-Alpha data only:

Sh2 170 in H-Alpha


Lucknow, Ontario
August 2021

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