NGC2174 Emission nebula in [SII], Ha and [OIII] from AP155EDF f/7 and FLI ML4022

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Taken on December 23, 2009 from my ranch in the California Gold Country

Astro-Physics AP155EDF f/7 used with 4" field flattener 

Finger Lakes CFW 4-5 filter wheel 

Robofocus

Finger Lakes ML4022 camera

Chroma 50 x 50 mm square Ha, [SII], [OIII] filters (7nm)

Astro-Physics 80/900mm guide scope with adjustable rings

SBIG ST7ME guide camera

AP1200GTO mount

5 x 30 minutes Ha, [SII]

8 x 30 minutes [OIII]

9 hours total exposure time (taken in a single session)

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