The Rosette Nebula


I thought to capture an image of this beautiful nebula that would show it in a wider context, but I see now why that is rarely done - the large number of stars in this part of the sky makes the image very busy. I processed this image more intensely than usual to try to correct that, and I have enhanced the star colors so the nebula stands out a little more. Fortunately, having 12 subs acquired at pretty low temperatures, with aggressive dithering and a pier flip halfway through, resulted much less noise than I usually get with the 50D.

The small H alpha nebula below the Rosette is Sharpless 280.

South of Foymount, Ontario; February 23, 2011, 7:30-11:30 PM; T=-5 to -10 C, seeing excellent. 200mm lens at f/3.5, ISO 800, on modified Canon 50D; guided; Hutech LPS filter; 12x1000s exposures.



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