The Crescent Nebula
NGC 6888 - Bi-Color Narrowband

Crescent Nebula

The Crescent Nebula is located in the constellation of Cygnus. This emission nebula was formed by the stellar winds associated with it's massive Wolf-Rayet central star. Wolf-Rayet stars are very hot, very massive stars with a high rate of mass loss. This image is a combination of Hydrogen Alpha and Oxygen. The Hydrogen Alpha was incorporated into the red channel and the OIII used in the blue and green channel.



Telescope: Astro-Physics 160mm EDF f7.5 @ f7.7 Designation: NGC 6888 or Caldwell 27
Mount: Astro-Physics AP1200GTO
Constellation: Cygnus
Camera: Apogee U16M with Gen II Astrodon Filters Distance: Approx 5000 Light Years
Guiding: SBIG ST402 via Mini Borg 60mm Type: Emission Nebula
Exposure: 280 minutes Ha & 300 minutes OIII Position: R.A. 20 hr 12 min , Dec +280 21'
Processed using PixInsight and Photoshop CS6 Date: 1 & 2 August 2013
Acquisition: CCDAutopilot/MaximDL/The Sky 6/M1OASYS Location: Deerlick Astronomy Village