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 December 22 2009  Messier 8 The Lagoon Nebula RGB Ha |
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M8 The Lagoon Nebula is a giant interstellar cloud in the constellation Sagittarius.
M8 is estimated to be 4,100 light-years from the Earth. In the sky of Earth, it spans 90' by 40', translates to an actual dimension of 110 by 50 light years. Like many nebulas, it appears pink in time-exposure color photos but is gray to the eye peering through binoculars or a telescope, human vision having poor color sensitivity at low light levels. The nebula contains a number of Bok globules - dark, collapsing clouds of protostellar material - the most prominent of which have been catalogued by E. E. Barnard as B88, B89 and B296. It also includes a funnel-like or tornado-like structure caused by a hot O-type star that pours out ultraviolet light, heating and ionizing gases on the surface of the nebula.
The Lagoon Nebula also contains at its centre a structure known as the "Hourglass Nebula" (so named by John Herschel), which should not be confused with the better known Hourglass Nebula in the constellation of Musca.
This image is the result of 10 poses by 6 minutes to 400 ISO for the RGB and 19 poses from 10 minutes to 800 ISO ha (astronomik 13 nm). Preprocessing with IRIS. Color balance with PS. Photo made in the vicinity of Rome.
Telescope: Newton Skywatcher 250mm f 4.8, Baader coma
corrector,Astronomik clip 13 nm H Alpha
Camera: Canon 350D modified
Mount: Eq6 Pro
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| Submitted by: Fabiomassimo Castelluzzo (fabiomax) | Location: Riano Roma (ITALY) | Date: June 12 2009 |
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December 22 2009
Views: 1090
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