NGC7000 + Pelican Widefield in [SII], Ha and [OIII] from Pentax 300mm f/4 medium format lens, IMG6303E and Baader filters

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Click image to enlarge, click here for highest resolution

Red = Ha, Green = [OIII], Blue = [OIII] + synthetic Hbeta

synthetic Hbeta = 30% * Halpha

Halpha only (3x20min)

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Taken on July 3, 2007 from my backyard in Castro Valley, Ca.

Pentax SMC 300mm f/4 medium format camera lens 

Finger Lakes IMG6303E imaging camera operated at -26C

Finger Lakes DF2 Digital Focuser

Finger Lakes CFW7 Filter wheel

Takahashi FCT-76 guide scope

SBIG ST7E guide camera

Custom made camera mounting frame

Baader Planetarium 7nm Ha filter (50.8mm unmounted)

Baader Planetarium 8nm [SII] filter (50.8mm unmounted)

Baader Planetarium 8nm [OIII] filter (50.8mm unmounted)

3 exposures of 20 minutes for Halpha

3 exposures of 20 minutes for Sulfur

3 exposures of 20 minutes for Oxygen

3 hours total exposure time

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