NGC-6888 "The Crescent Nebula" (5,000 ly)
Click on the image for the Full Resolution
 

Material :
 

    - Losmandy HGM TITAN / Gemini Goto mount
    - William Optics FLT-110 f/6.5 (715mm) Triplet APO SD refractor
    - SBIG ST-10XME
    - SBIG CFW-8A
 

Accessories :

    - Astronomik 13nm Hα CCD filter

Conditions :

    - Gibbous Moon

Exposures : (Total on 5 nights : 14 hours and 25 minutes of total exposure for the luminance)

Luminance :

 Hα = 41exp. of 15min. (b1x1) + R = 25exp. of 10min (b1x1)

Color information :

 R =G = 2exp. of 10min (b2x2)

 B = 4exp. of 10min (b2x2)