An 80Q jpg version of the "redo" at processing, reposted to Asterisk.

CITSO Blog: Spelunking the Cave Nebula

Sh2-155 in Cepheus

Imaged August 26 - September 1 2011

Click the image for the high resolution version!

Sh2-155 in Cepheus.

Imaged August 26 - September 1 2011, 10 hours total.

L=300 minutes (1x1), R=100m, G=100m, B=100m (2x2). Subs=10m.

Telescope=PlaneWave CDK17, Camera=SBIG STL-4020M, Mount=Paramount ME.
PlaneWave focal reducer (f/4.5). Baader filters.

Frames acquired with TheSky X, MaxIm DL, and Focusmax.
Processed with PixInsight and CCDInspector.

I was drawn to the Cave by its wide expanse of dark nebulae, the deep colors of its emission and reflection nebulae, and the vivid assortment of stars splashed across the field. I set up the shot so that a small grouping of colorful stars would spill into the corner of the frame, as if they were jewels falling out of the entrance to the cave. Over 16 hours were shot, with only the best 10 hours kept for processing.

Copyright © 2014 Howard Trottier