M-27 "The Dumbell Nebula" (1,250 ly)
Click on the image for the Full Resolution
 

Material :
 

    - Losmandy HGM TITAN / Gemini Goto mount
    - Meade 12" UHTC SCT OTA used at 1800mm  

    - SBIG ST-10XME at -16.5°C
    - SBIG CFW-8A
    - SBIG AO-7 Adaptive Optics used at 2Hz (the first two nights) and at 3.2Hz (the third night)

    - Astronomik IR Clear CCD filter (for the focusing with the Hα CCD filters)

    - Astronomik 13nm Hα CCD filter
    - Celestron f/6.3 CCD Telecompressor.

Exposures :   (Total luminance : 8h05min.)

Ha (Luminance) = 97exp. x 5min.     (binning 1x1)