Monday, October 2, 2017

H-alpha Cocoon Nebula

I tried some Ha imaging with the 8 inch f/4 scope the other night, but the results were mixed. In Ha light, the Cocoon usually resolves into a number of delicate shells, but tonight's result does not show this structure. There was a slight haze, but I do not think the sky conditions created any problems. I stacked and processed about 24 frames, but the image is a nebulous blob. I will try again on the next clear night.

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