Thursday, October 6, 2016
A Cosmic Bubble
The Bubble Nebula (NGC 7635) is an H II emission region located in Cassiopeia. The bubble is created by the stellar winds from the nebula's central star. The whole is surrounded by a giant molecular cloud. Both the nebula and the cloud are visible in this image, taken 10.5.16 with the 8 inch f/4 newt and DS 2.3+.
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NGC 2244 with the Seestar S50--a 6-hour integration
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