Bicolor image of the Crescent Nebula

Photographer
Steve Pastor
Email
astro3d@pvtnetworks.net
Location of photo
Mayhill, New Mexico
Date/Time of photo
August 11th , 13th and Sept 14th - 17th, 2015
Equipment
Takahashi CCA-250 f/5 astrograph and QSI683wsg camera on a Paramount ME
Description
The Crescent Nebula (NGC 6888) is found in the constellation Cygnus, whose emission is powered by strong stellar winds from a Wolf-Rayet star colliding with previously expelled outer envelopes of the stars atmosphere. This narrow band image is a combination of 5 hrs of H alpha data (Astrodon 5 nm Gen 2 filter) and 5 hrs 20 m of O[III] data (Astrodon 3 nm Gen 2 filter); (Ha, 15 x 1200 sec lights @ -20o C; O[III], 16 x 1200 sec lights @ -20o C 21 darks; 126 bias; 128 flats); Processed in PixInsight
Website
https://www.facebook.com/steve.pastor.39