M1 Crab Nebula in [NII] and Halpha from Stinger 450 Classical Cassegrain and FLI CM10 Maxcam

Click image to enlarge

Splitting two very closely spaced emission lines: 

[NII] @ 658.4 nm

Ha   @ 656.4 nm                        

Taken on Noevmber 24, 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 [NII] filter (50mm diameter)

Three exposures of 20 minutes through Halpha (2x2 binned)

Three exposures of 20 minutes through [NII] (2x2 binned)

Two hours total exposure time

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