Higher-resolution version:  1078 x 708

Object Type: Emission nebula
Constellation: Cygnus
Magnitude:
Size: 20'

Commonly called the Crescent Nebula, NGC 6888 lies amid faint nebulosity in Cygnus. The nebula is a shell of gas ejected by the star near its center, which is being impacted by stellar winds from the same star.

Equipment: Meade 14" LX200R/ST-10XME/Astrodon LRGB filters/Paramount ME
F-ratio: f/6.5
Exposures: RRGB: R 10 x 18 minutes, binned 2x2: G 10 x 8 minutes: B 10 x 8 minutes: GB binned 3x3
Date: September 12, 2009
Location: Landers, California, USA
Technical Notes: Individual exposures were dithered using CCDAutoPilot2 and then sigma combined. The RGB image was created in Registar 1.0. A High-Pass Filter of 4 pixels was applied to the bright portion of the luminance image. Reduce Noise and Gaussian Blur were applied to the RGB image.