M27 Dumbbell Nebula in Halpha and [OIII] from Stinger 450 Classical Cassegrain

 

6 x 30 minutes Halpha, 4 x 30 minutes [OIII] under very good seeing

Red = Halpha

Green = [OIII]

Blue = [OIII] + 0.2 * Halpha (to simulate Hbeta emission)

click image to enlarge, click here for highest resolution

Taken on August 12 & 14, 2006 from my backyard in Castro Valley, Ca

To see this image in [NII], Halpha and [OIII] click here         

                                                                                  Stinger 450 Classical Cassegrain (18" f/12.6) 

  

Lumicon Giant Easy Guider with Focal reducer for final: F= 3366mm, f/7.1

Finger Lakes CM10 MaxCam imaging camera operated at -20C

Robofocus

Finger Lakes CFW1 Filter wheel

SBIG ST7E guide camera

Custom Scientific 3nm FWHM Ha filter (50mm diameter)

Custom Scientific 3nm FWHM [OIII] filter (50mm diameter)

Six exposures of 30 minutes through Halpha

four exposures of 30 minutes through [OIII]

Five  half hours total exposure time

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