M42 in [SI], Halpha and [OIII] from AP155EDF f/7 and FLI Proline PL3200 with Custom Scientific Filters

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taken on September 17, 18, 24 and 25, 2010 from my ranch in the California Sierra Gold Country

Astro-Physics AP155EDF f/7  

Finger Lakes CFW 1 filter wheel 


Finger Lakes Proline PL3200 camera

Custom Scientific 3nm FWHM Sulfur, Hydrogen Alpha and Oxygen filters

Astro Physics 80/900mm guide scope

SBIG ST7ME guide camera

AP1200GTO mount

159 x 90 seconds for [SII] 

80 x 90 seconds for Halpha

60 x  90 seconds for [OIII]

7 hours 28.5 minutes total exposure time

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