M1 Crab Nebula in [SII], Halpha and [OIII] from Stinger 450 Classical Cassegrain, FLI CM10 Maxcam and Baader Planetarium Emission Line Filters

Click image to enlarge, click here for highest resolution

taken on January 14 and 15, 2008 from my backyard in Castro Valley, Ca

Red = [SII] 

Green = Halpha

Blue = [OIII]

Stinger 450 Classical Cassegrain (18" f/12.6)  

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

(binned 2x2, image scale = 0.84 arc-sec/pixel at capture)

Finger Lakes CM10 MaxCam imaging camera operated at -25C

Robofocus

Finger Lakes CFW1 Filter wheel

SBIG ST7E guide camera

Baader Planetarium Ha filter (50.8 mm diameter)

Baader Planetarium [OIII] filter (50.8mm diameter)

Baader Planetarium [SII] filter (50.8mm diameter)

5 exposures of 10 minutes through Halpha filter

5 exposures of 10 minutes through [OIII]

27 exposures of 10 minutes through [SII]

6 hours 10 minutes total exposure time

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