<< Back to gallery

Photographer:

Rod Pommier

Email:

pommierr@ohsu.edu

Location of Photo:

United States

Date/Time of photo:

2013-07-18 through 2013-08-06

Equipment:

Telescope/Mount: Celestron Compustar C14 with Astrophysics 0.75x focal reducer (f/8.3) Location: Pommier Observatory Portland, OR, USA. Camera: SBIG STL 11000M with Baader Planetarium H-alphaLRGB filters. Exposures: H-alpha:L:R:G:B=630:90:120:120:120=18 hours, 10 minutes total exposure

Description:

NGC 6914 lies 6,000 light-years away in Cygnus and is a very rare region in which one can see all three classes of nebulae, red emission, blue reflection, and dark obscuring, within a very small expanse of sky. The broad expanse of hydrogen gas is re-emitting red hydrogen alpha light as a result of ionization from the ultraviolet light from several hot stars of the Cygnus OB2 association. These stars also illuminate the blue reflection nebulae of residual dust from their formation. The entire tableau silhouettes numerous dark nebulae also being sculpted by the stellar winds emitted by these stars.

Comments


You must be logged in to post a comment.