3C461 Cassiopeia A in Halpha and [OIII] from Stinger 450 Classical Cassegrain and FLI CM10ME with Custom Scientific filters

click image to enlarge, click here for highest resolution

Taken on Sept 10 and 13, 2007 from my backyard in Castro Valley, California

Red = Halpha

Green = [OIII]

Blue = [OIII] + 0.3* Halpha (to simulate Hbeta)

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 -25C


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)

four exposures of 30 minutes through Halpha filter

seven exposures of 30 minutes through [OIII]

five and one half hours total exposure time

Hit Counter