M17 in [SII] Halpha and [OIII] from AP155EDF f/7 and FLI PL3200

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Taken on May 6, 2011 from my ranch in the California Sierra Gold Country 

Astro-Physics AP155EDF f/7  

Finger Lakes CFW 5-7 filter wheel with FLI Research Grade Filters


Finger Lakes Proline PL3200 camera

Astro Physics 80/900mm guide scope

SBIG ST7ME guide camera

AP1200GTO mount

3 hours of [SII], Ha and [OIII] (15 minute subexposures)

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