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NGC 2175, The Monkey Head Nebula
(click for full-size image)

Optics: Stellarvue 115 f/7, Astro-Tech AT2FF Field Flattener
Camera: QSI 683wsg @ -25C
Filters: Astrodon Narrowband Filters (H-alpha 5nm, OIII 3nm, SII 5nm)
Mount: Losmandy G11-G2 with OPW
Guiding: OAG with Starlight Xpress Lodestar Auto Guider / PHD Guiding
Location: North Attleboro, Massachusetts
13 hours exposure over 6 nights, 12/3/2012 - 12/19/2012
Ha:OIII:SII 6h40m:3h:3h20m (20x20m : 9x20m : 10x20m) binned 1:2:2
Captured with Sequence Generator Pro
Processed with PixInsight and Photoshop CS6
prior version(full size)