1680 x 1050

Cepheus and Cassiopeia contain many HII regions, some of which are listed in the Sharpless (Sh2) catalog.

Equipment: Nikkor 180mm f/2.8 lens/STL-11000M/Astrodon LRGB filters/Losmandy G-11
F-ratio: f/4
Exposures: RRGB: R 10  x 20 minutes: G 10 x 5 minutes: B 10 x 5 minutes: GB binned 2x2
Date: November 14, 2009
Location: Borrego Springs, California, USA
Technical Notes: Individual exposures were sigma combined. The RGB image was created in Registar 1.0.