B72 - The Snake Nebula - Dark Nebula in Ophiuchus
by Bob and Janice Fera
PlaneWave CDK-20 20" f/6.8 Corrected Dall-Kirkham Cassegrain
PlaneWave Ascension 200HR Mount
Apogee U16M CCD Camera
Astrodon Filters
LRGB Composite - L:105 R:40 G:40 B:40 minutes
Sub Exposures: L:21x5min R:8x5min G:8x5min B:8x5min Unguided
Image acquired with CCDAutopilot
Processed in CCDstack and Adobe Photoshop
Taken June 20,21, 2015 from Sierra Remote Observatories, CA