The Jellyfish Nebula in Gemini

Optics/Mount: CPC1100 with f6.3 Celestron reducer on a Milburn Wedge. Dec antibacklash set to 27/27. PEC on.
Camera: SXVR-H694
Exposure: 18 hours total, 70 x 5 minutes Ha, 68 x 5 minutes OIII, 78 x 5 minutes SII, all bin 2x2
Filters: Astrodon 5nm Ha and SII and 3nm OIII
Date: 8 nights from November 17, 2012 – February 14, 2013

Imaging automation and capture: Sequence Generator Pro

Guiding Hardware: Flea 3, Taurus Tracker III off axis guider. Guiding scale 0.72 arcsec/pixel. 1 second guide exposures.
Guiding Software: PHD. Aggressiveness 80, Hysteresis 0, Minimum Move 0.9, Max RA 1000, Max Dec 600. Dec set to auto/resist switching. Dithering set to Extreme with Settle < 1.2.
Guiding performance: HFR of subs range from 1.2 – 1.9 arc seconds in varying seeing conditions
Focusing: Rigel Systems GCUSB/nStep on stock C11 focuser
Light pollution: Bortle 8 (white zone, NELM about mag 4.5)
Image scale at capture: 1.2 arcsecs/pixel bin 2x2 = f/5.7
Scale of presentation: 1.2 arcsecs/pixel (50%)
Processing: Bad pixel map in Nebulosity 2, stacked with Deep Sky Stacker, post-processed with Photoshop CS2.