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Messier 20 - The Trifid Nebula

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posted by alias CSky65 on Monday 4th of July 2016 07:11:15 AM

The Trifid Nebula (catalogued as Messier 20 or M20 and as NGC 6514) is an H II region located in Sagittarius. It was discovered by Charles Messier on June 5, 1764. Its name means 'divided into three lobes'. The object is an unusual combination of an open cluster of stars; an emission nebula (the lower, red portion), a reflection nebula (the upper, blue portion) and a dark nebula (the apparent 'gaps' within the emission nebula that cause the trifurcated appearance; these are also designated Barnard 85). Viewed through a small telescope, the Trifid Nebula is a bright and peculiar object, and is thus a perennial favorite of amateur astronomers. The Trifid Nebula is a star-forming region in the Scutum spiral arm of the Milky Way. The most massive star that has formed in this region is HD 164492A, an O7.5III star with a mass more than 20 times the mass of the Sun. This star is surrounded by a cluster of approximately 3100 young stars. (Source: Wikipedia en.wikipedia.org/wiki/Trifid_Nebula) Taken at Lee, Illinois on June 6 2016. Image Type: Ha + OIII Ha 8 x 600s OIII 8 x 600s Converted to RGB using Ha as Red and OIII as Blue then synthetizing the Green Channel. Hardware: SBIG ST-8300M, Astro-Tech 8 RC on an Orion Atlas.



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  • Published 11.27.21
  • Resolution 1023x744
  • Image type jpg
  • File Size 168225 byte.

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