M42 Closeup in [SII], Halpha and [OIII] from Stinger 450 Classical Cassegrain and FLI CM10 with Custom Scientific Filters

click image to enlarge, click here for highest resolution

Taken on October 20, 2007 from my backyard in Castro Valley, California

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

(image scale = 0.42 arc-sec/pixel at capture)

Finger Lakes CM10 MaxCam imaging camera operated at -25C

Robofocus

Finger Lakes CFW1 Filter wheel

SBIG ST7E guide camera

Custom Scientific 4.5nm FWHM Ha filter (50mm diameter)

Custom Scientific 4.5nm FWHM [OIII] filter (50mm diameter)

Custom Scientific 4.5nm FWHM [SII] filter (50mm diameter)

38 exposures of 20 seconds through Halpha filter

37 exposures of 20 seconds through [OIII] filter

36 exposures of 20 seconds through [SII] filter

37 minutes total exposure time

Hit Counter