M97 Owl Nebula in RGB from Stinger 450mm f/12.6 Classical Cassegrain used at f/7.3 and FLI ML4022 with Optec IR-blocking RGB filters

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Taken on May 29, 2010 from my ranch in the California Gold Country

  

Stinger 450 Classical Cassegrain (18" f/12.6)  

Lumicon Giant Easy Guider with Focal reducer for final: F= 3366mm, f/7.4

Finger Lakes Microline ML4022  imaging camera operated at -25C

Robofocus

Finger Lakes CFW7 Filter wheel

SBIG ST7E guide camera

6 exposures of 5 minutes in Green and Blue filters

5 exposuress of 5 minutes in Red filter

1 hour 25 minutes total exposure time

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