Sharpless 2-101 in [SII], Ha and [OIII] from AP180EDT f/9 and FLI ML4022 with Custom Scientific emission line filters

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Taken on August 15 and September 4 & 5, 2009 from my ranch in the California Gold Country under a full moon (for oxygen and sulfur)

why the scopes are behind a corral

AP180EDT f/9

FLI Microline ML4022 imaging camera operated at -25C

AP 1200 GTO mount

AP80/900mm guide scope with adjustable rings

SBIG ST7E guide camera

Custom Scientific 3nm FWHM AR-coated 50mm round Halpha, [SII] and [OIII] filters

52 x 15 minutes binned 2x2

13 hours total exposure 

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