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taken on April 16 and 17, 2010 from my ranch in Mariposa County, California
AP155EDF f/7 imaging scope used with AP 4" Field flattener
Finger Lakes CFW 4-5 filter wheel
Finger Lakes Proline 39M monochrome camera
No filter
Robofocus
AP 80/900 mm guide scope
SBIG ST7ME guide camera
AP1200GTO mount
37 x 15 minutes no filter
9.25 hours total exposure time