NGC7000 + IC5070 + IC5068 widefield region in Halpha and [OIII]

Red = Halpha

Green = [OIII]

Blue = [OIII] + 0.15 * Halpha (to simulate Hbeta emission)

click image to enlarge, click here for highest resolution

Taken on August 31 and September 1-2, 2005 from my backyard in Castro Valley, California

Pentax Takumar 150mm f/2.8 medium format camera lens stopped down to f/4

Finger Lakes CM10XME imaging camera operated at -26C

Custom made camera mounting frame 

Finger Lakes DF2 Digital Focuser

Finger Lakes CFW7 Filter wheel

Takahashi FCT-76 guide scope

SBIG ST7E guide camera

Custom Scientific 3nm Ha filter (50mm unmounted)

Custom Scientific 3nm [OIII] filter (50mm unmounted)

six exposures of 30 minutes for Halpha

ten exposures of 30 minutes for [OIII]

eight hours total exposure time

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