Sharpless 2-155 region widefield in [SII], Ha and [OIII] from Pentax medium format 150mm lens and FLI IMG6303E with Baader filters

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Taken on June 13, 2007 from my backyard in Castro Valley, Ca..

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

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)

6 exposures of 20 minutes for Halpha

4 exposures of 20 minutes for Sulfur

6 exposures of 20 minutes for Oxygen

5 hours 20 minutes total exposure time

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