Sharpless 173 aka Sh2-173 in Cassiopeia - HaRGB

Sh2-173 HaRGB


Sharpless 173 is the large faint red nebula in Cassiopeia..

12/14/14 x 10 min each of RGB, 35x20min H-Alpha
Camera: Apogee U16M (16803) w Gen II Astrodon RGB and H-Alpha
Scope: Planewave 12.5" CDK
Mount: Paramount ME
Guiding SBIG ST402ME via Astrodon MMOAG
RGB and H-Alpha processing in PixInsight; Blend of H-Alpha w RGB and save-for-web in PS CC

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H-Alpha channel - 12 hours (uncropped vs. the HaRGB)

Sh2-173 H-Alpha

Lucknow, Ontario
November 2022

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