Barnard 72
The Snake Nebula, Dark Nebula. Ophiuchus
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AstroPhysics 175EDF f8
AP 3600GTO "El Capitan"
SBIG STT-8300
SBIG FW8G (Guided Filter Wheel)
May 2017. Cave Creek Canyon Observatory, Arizona Sky Village
Equipment:

Telescope:
Mount:
Camera:
Guider:
Filters:

- Luminance (Astrodon) 48x10 mins   = 480 mins
- Red (Astrodon) 27x10 mins                 = 270 mins
- Green (Astrodon) 24x10 mins             = 240 mins
- Blue (Astrodon) 24x10 mins                = 240 mins
 
Total Exposure Time =  20h 30m
Details:
Data Imaged remotely over 12 nights during March, April & May 2017.
© 2017, David A. Churchill
Links:

 The Astro-Physics 175EDF Telescope