Halpha = Red, [OIII] = Green, Helium II = Blue (wavelength ordered palette)
Click image to enlarge, click here for highest resolution
Benoit Schillings' original luminance data, click to enlarge
Original Narrowband data before combining with luminance
Taken on July 19 and 20, 2006 at Richard Crisp's residence in Castro Valley, California
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 -26C
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)
Custom Scientific 3nm FWHM Helium II filter (50mm diameter)
Six exposures of 30 minutes in Helium II
Five exposures of 30 minutes in [OIII]
Four exposures of 30 minutes in Halpha
Seven and a half hours total exposure time for narrowband data
Taken during July 2006 at Benoit Schillings' residence in Los Altos Hills, California
Home built 16" Newtonian, barlowed up to f/12
ST10XME imaging camera with AO7
two hours exposure through luminance filter
Total exposure time for combination image is 9.5 hours