NGC4490 and NGC4485 from Stinger 450 Classical Cassegrain and FLI CM10 Maxcam

click image to enlarge, click here for highest resolution

Taken on  April 29, 2007 from my backyard in Castro Valley, California

first light test on new primary mirror

Stinger 450 Classical Cassegrain (18" f/12.6)    

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

Finger Lakes CM10 MaxCam imaging camera operated at -25C

Robofocus

Finger Lakes CFW1 Filter wheel

SBIG ST7E guide camera

Four exposures of 20 minutes: no filter used, NO FLATS

One hour and 20 minutes total exposure time

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