NGC2903 Spiral Galaxy in Unfiltered + RGB Light from Stinger 450 Classical Cassegrain and FLI Proline3200 with Optec RGB filters

click image to enlarge, click here for the highest resolution

Taken on Feb 28, 2008 and March 2 & 3, 2008 from my backyard in Castro Valley, Ca.

 

Stinger 450 Classical Cassegrain (18" f/12.6)  

Lumicon Giant Easy Guider with Focal reducer for final: F= 3366mm, f/7.1

(binned 2x2, image scale = 0.84 arc-sec/pixel at capture)

Finger Lakes PL3200ME imaging camera operated at -45C

Robofocus

Finger Lakes CFW1 Filter wheel

SBIG ST7E guide camera

95 exposures of 5 minutes 

7 hours 50 minutes total exposure time

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