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This is a combined stack from 4 hours and 7 min of RGB data taken from a modded Canon T1i from last year and 2 hours of Ha taken with a QSI 683ws from this year registered and cropped in RegiStar.
NGC 281 the Pac Man nebula
RGB data captured on October 29 and 31, 2011
H-Alpha data captured on November 6, 2012
RGB data (Canon T1i): Combination of 60 sec, 120 sec and 180 sec. exposure stacked in DSS for a total of 4 hour 7 min.
H-Alpha data (QSI 683ws): 15 minute exposure stacked in DSS for a total of 2 hours.
Orion 80mm EON
Orion 50mm guide scope with SSAG
Canon T1i (modified)
Losmandy G11 with Gemini II
Hutech IDAS Light Pollution Suppression (LPS) Filter
Baader 6nm Ha filter
Images from T1i and QSI were combined using RegiStar