Sharpless 2-170 (SH2-170) in [SII], Halpha and [OIII] from AP155EDF f/7 with FLI PL3200ME and Custom Scientific filters

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Taken on September 10, 11, 17, 18, 24 and 25, 2010 from my ranch in the California Sierra Gold Country

AP155EDF f/7 

AP1200GTO mount

AP80/900mm guide scope

SBIG ST7E guide camera

Robofocus

Custom Scientific 3nm FWHM 50mm round filters

12 x 15 minutes through Halpha filter

33 x 15 minutes of [OIII]

14 x 15 minutes [SII]

14.75 hours total exposure time

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