Sharpless 2-170 (SH 2-170) in Halpha from AP180EDT f/9 and FLI IMG6303E with Custom Scientific 4.5nm Halpha filter

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Taken on August 9, 2008 from my ranch in Mariposa County, California

Halpha only

Astro-Physics AP180EDT f/9 imaging telescope used at f/9 

AP1200GTO mount

AP80/900mm guide scope

FLI IMG6303E camera, operated at -35C 

SBIG ST7ME guide camera

Custom Scientific Ha 50 mm round filter (4.5nm FWHM)


16 exposures of 10 minutes through Halpha filter

2 hours 40 minutes total exposure

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