The Trifid Nebula - 12.5-inch Plane Wave f/8
© 2018 Klaus Brasch
The photograph was taken with 3 x 2 min frames with the 12.5-inch Plane Wave f/8, all with a spectrally modified Canon 6D coupled with an IDAS LP-V4 filter, shooting at ISO 3200-6400.
The following was retrieved from Wikipedia, the free encyclopedia, at
on March 1, 2014
The Trifid Nebula
"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."
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