Sh2-155 aka Caldwell 9 aka The Cave Nebula

The Cave Nebula

The Cave Nebula in Cepheus

The Cave Nebula, Sh2-155 or Caldwell 9, is a dim and very diffuse bright nebula within a larger nebula complex containing emmison, reflection, and dark nebulosity. [Wikipedia]

Scope: AP155
Camera: Apogee U16M w Astrodon GenII H-Alpha filter
Mount: Paramount ME guided w SBIG ST-402ME and Borg 60mm Achromat
11 x 30 min 
Acquired with TSX and CCD-Commander
All processing in PixInsight

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Lucknow, Ontario
November 2016