Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent Nebula  ·  NGC 6888
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NGC6888 The Crescent Nebula, niteman1946
NGC6888 The Crescent Nebula
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NGC6888 The Crescent Nebula

Getting plate-solving status, please wait...
NGC6888 The Crescent Nebula, niteman1946
NGC6888 The Crescent Nebula
Powered byPixInsight

NGC6888 The Crescent Nebula

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Description

The Crescent Nebula, NGC 6888 (a.k.a. Caldwell 27, Sharpless 105) is an emission nebula and was formed by the fast stellar wind from the Wolf-Rayet star WR 136. This wind collided with, and energized a slower wind previously ejected when the star became a red giant 400,000 years ago. Results of this are a shell and two shock waves, with one moving outward and the other moving inward. The inboard shock wave heats the stellar wind to X-ray-emitting temperatures. The nebula is located about 5000 light years away in the constellation Cygnus. (Source Wikipedia).

The image was captured with a Meade 12"LX200 at F7.5. There were a total of 150 subs at ISO1600 and 10 minutes each (25.0 hr) on 8/02 (8), 8/03 (27), 8/06 (18), 8/07 (31), 8/09 (2), 8/10 (33), and 8/11 (31). Processing was done with PixInsight. This is a very slight crop -- North is up.

All in all I was pleased with the results. You can just make out the faint nebulosity throughout and just outside of the image proper. This is a good candidate for future enhancement with a CCD camera.

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NGC6888 The Crescent Nebula, niteman1946