NGC7822 and Cedarblad 214 in Cepheus
Imaged from Nova Scotia late fall, 2011 through a Canon 300mm f2.8 telephoto lens using a modified Canon T3i DSLR.
Top image is in the light of Ha only through a 6nm filter. Total integration time was 2 hours, 12 minutes.
Bottom two images incorporate an additional 2 hours, 18 minutes of RGB data for a total integration time of 4 hours, 30 minutes. The difference in appearance stems from assigning differing weights to the Ha data in making the combination.
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