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From APOD:

To the eye, this cosmic composition nicely balances the Bubble Nebula at the lower right with open star cluster M52. The pair would be lopsided on other scales, though. Embedded in a complex of interstellar dust and gas and blown by the winds from a single, massive O-type star, the Bubble Nebula, also known as NGC 7635, is a mere 10 light-years wide. On the other hand, M52 is a rich open cluster of around a thousand stars. The cluster is about 25 light-years across. Seen toward the northern boundary of Cassiopeia, distance estimates for the Bubble Nebula and associated cloud complex are around 11,000 light-years, while star cluster M52 lies nearly 5,000 light-years away. The wide telescopic field of view spans about 1.5 degrees on the sky or three times the apparent size of the Full Moon.

AG Optics 12.5 Newt
Apogee U16
300 Pics

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Comment by Dave Lane on December 7, 2012 at 10:01am

Thanks Trevor Fred and Marc. It was taken with Astrodon Ha SII and OIII filters.

Comment by Marc Basti on December 7, 2012 at 4:19am

Nice looking pic. Cool mix of color. Marc

Comment by Dave Lane on December 6, 2012 at 6:14pm

About 30 hours more or less. About 100 5-10 minute shots in each frame.

Comment by Trevor Jones on December 6, 2012 at 5:34pm

Wow Dave, this is incredible!

Comment by Russ Ruggles on December 6, 2012 at 5:20pm

Amazing shot Dave. 300 Pics... = ? How many hours of data?

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