Unfortunately, there were some weird reflections (top left) coming from the bright nearby star, Alnitak. Stacked FITS below if anyone wants some new data to practice with.
Taken November 2, 2013 from Lake San Antonio, CA, USA.
Higher resolution on Flickr: Barnard 33 - Horsehead Nebula
Stacked FITS data: Barnard 33 - Stacked FITS
Total integration: 290 mins (4 hr 50 mins)
Details, Equipment, & Software:
Telescope: Astro-Tech AT6RC w/ AT2FF (FL1370mm f/9)
Camera: Canon T3i (Full Spectrum, Gary Honis modified)
Mount: Orion Atlas EQ-G
Guide: Orion ST80 w/ SSAG
Capture: Backyard EOS (58x300s lights / darks / flats / dark flats)
Stacking: Nebulosity 3
Final Processing: StarTools & Photoshop CS6