Telescope: Astro-Physics 160 EDF	Description:The Crescent Nebula (also known as NGC 6888, Caldwell 27, Sharpless 105) is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. It is formed by the fast stellar wind from the Wolf-Rayet star WR 136 (HD 192163) colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 250,000 to 400,000 years ago. The result of the collision is a shell and two shock waves, one moving outward and one moving inward. The inward moving shock wave heats the stellar wind to X-ray-emitting temperatures. It is a rather faint object located about 2 degrees SW of Sadr (Wiki).
Mount: Astro-Physics AP1600 GTO	Constellation: Cygnus
Camera: SBIG STX 16803 with Astrodon Ver. 2 Filters	Remotely Imaged With CCD Commander.
Guiding:SBIG ST402 Guider	Type: Emission Nebula
Exposure Data: Ha 120 minutes.	Position: R.A. 20h 12m 7s Dec +38° 21.3'
Processed using Maxim data aquisition, PixInsight and PhotoShop image processing	Date: July 2020
Data Acquisiton, Reduction and Processing by Jim Janusz	Imaging Location: Cave Creek Canyon Observatory