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M-27 "The Dumbell Nebula" (1,250 ly)
 

Equipment :

    - Losmandy HGM TITAN / Gemini Goto mount
    - ASA Astrograph N12" f/3.62 OTA used at 1104mm
    - SBIG ST-10XME at -15°C
    - SBIG CFW-8A
 

Accessories :

   - 3" Wynne corrector
   - Astrodon™ 6nm Hα CCD Filter
   - Astrodon™ 1:1:1 Tru-Balance™ RGB Filters
   - Astronomik 13nm OIII CCD Filter

Conditions :

    - New Moon

Exposures : (Total : 18h50min. for the Luminance only on 6 nights)

    Luminance :

L(Hα)=  138exp. x 10 min  all in binning 1x1
 

Color information :

R= G = B = 6 exp. x 10 min. (binning 1x1)