- Telescope: William Optics FLT 110 mod with FT 3025
- Camera: Qhy 2pro mono
- Mount: Skywatcher EQ6 pro
- Ts finder 8x50 & Meade DSI 1 for guiding
- Location: Mount.Parnon-Pelloponisos,GR
Information about M 20
The
Trifid Nebula (catalogued as Messier 20 or M20 and as NGC 6514) is an H
II region located in Sagittarius. 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 trifid 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 was the subject of an
investigation by astronomers using the Hubble Space Telescope in 1997,
using filters that isolate emission from hydrogen atoms, ionized sulfur
atoms, and doubly ionized oxygen atom. The images were combined into a
false-color composite picture to suggest how the nebula might look to
the eye.
The close-up images show a dense cloud of dust and gas, which is a stellar nursery full of embryonic stars. This cloud is about 8 light-years away from the nebula's central star. A stellar jet protrudes from the head of the cloud and is about 0.75 ly long. The jet's source is a young stellar object deep within the cloud. Jets are the exhaust gasses of star formation. Radiation from the nebula's central star makes the jet glow.
The images also showed a finger-like stalk to the right of the jet. It points from the head of the dense cloud directly toward the star that powers the Trifid nebula. This stalk is a prominent example of evaporating gaseous globules, or 'EGGs'. The stalk has survived because its tip is a knot of gas that is dense enough to resist being eaten away by the powerful radiation from the star.
In January 2005, NASA's Spitzer Space Telescope discovered 30 embryonic stars and 120 newborn stars not seen in visible light images.
It is approximately 5,000 ly away from Earth. It is in a magnitude of 6.3.
The close-up images show a dense cloud of dust and gas, which is a stellar nursery full of embryonic stars. This cloud is about 8 light-years away from the nebula's central star. A stellar jet protrudes from the head of the cloud and is about 0.75 ly long. The jet's source is a young stellar object deep within the cloud. Jets are the exhaust gasses of star formation. Radiation from the nebula's central star makes the jet glow.
The images also showed a finger-like stalk to the right of the jet. It points from the head of the dense cloud directly toward the star that powers the Trifid nebula. This stalk is a prominent example of evaporating gaseous globules, or 'EGGs'. The stalk has survived because its tip is a knot of gas that is dense enough to resist being eaten away by the powerful radiation from the star.
In January 2005, NASA's Spitzer Space Telescope discovered 30 embryonic stars and 120 newborn stars not seen in visible light images.
It is approximately 5,000 ly away from Earth. It is in a magnitude of 6.3.
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