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12-04-2011, 09:34 AM | #151 | |
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Quote:
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12-04-2011, 06:34 PM | #152 |
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Thanks dude! I think Montana would be an awesome place to shoot the sky in the summer.
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12-27-2011, 02:00 PM | #153 |
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The Rosette Nebula is a large emission nebula located 3000 light-years away. The great abundance of hydrogen gas gives NGC 2237 its red color in most photographs. The wind from the open cluster of stars known as NGC 2244 has cleared a hole in the nebula's center.
The Rosette Nebula (also known as Caldwell 49) is a large, circular H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 (Caldwell 50) is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter. The complex has the following NGC designations: NGC 2237 – Part of the nebulous region (Also used to denote whole nebula) NGC 2238 – Part of the nebulous region NGC 2239 – Part of the nebulous region (Discovered by John Herschel) NGC 2244 – The open cluster within the nebula (Discovered by John Flamsteed in 1690) NGC 2246 – Part of the nebulous region The cluster and nebula lie at a distance of some 5,200 light-years from Earth (although estimates of the distance vary considerably, down to 4,900 light-years.[3]) and measure roughly 130 light years in diameter. The radiation from the young stars excite the atoms in the nebula, causing them to emit radiation themselves producing the emission nebula we see. The mass of the nebula is estimated to be around 10,000 solar masses. It is believed that stellar winds from a group of O and B stars are exerting pressure on interstellar clouds to cause compression, followed by star formation in the nebula. This star formation is currently still ongoing. A survey of the nebula with the Chandra X-ray Observatory in 2001 has revealed the presence of very hot, young stars at the core of the Rosette Nebula. These stars have heated the surrounding gas to a temperature in the order of 6 million kelvins causing them to emit copious amounts of X-rays.
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02-20-2012, 11:13 AM | #154 |
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OK got a couple new shots to add today. First up M81 and M82, two awesome galaxies...
Explanation: In this stunning cosmic vista, galaxy M81 is on the left surrounded by blue spiral arms. On the right marked by massive gas and dust clouds, is M82. These two mammoth galaxies have been locked in gravitational combat for the past billion years. The gravity from each galaxy dramatically affects the other during each hundred million-year pass. Last go-round, M82's gravity likely raised density waves rippling around M81, resulting in the richness of M81's spiral arms. But M81 left M82 with violent star forming regions and colliding gas clouds so energetic the galaxy glows in X-rays. In a few billion years only one galaxy will remain.
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02-20-2012, 11:16 AM | #155 |
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M81 and M82 from last night... 3 hour photo. A American-Canadian team determined the distance to M81 to be 12.9 million light-years ± 0.9 million light-years. So the light I recorded happened about 13 million years ago.
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02-20-2012, 01:03 PM | #156 |
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The Pacman Nebula or NGC281:
Explanation: NGC 281 is a busy workshop of star formation. Prominent features include a small open cluster of stars, a diffuse red-glowing emission nebula, large lanes of obscuring gas and dust, and dense knots of dust and gas in which stars may still be forming. The open cluster of stars IC 1590 visible around the center has formed only in the last few million years. The brightest member of this cluster is actually a multiple-star system shining light that helps ionize the nebula's gas, causing the red glow visible throughout. The lanes of dust visible left of center are likely homes of future star formation. Particularly striking in the above photograph are the dark Bok globules visible against the bright nebula. The NGC 281 system, dubbed the Pacman nebula for its overall shape, lies about 10 thousand light years distant.
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07-29-2012, 10:50 AM | #157 |
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Newest image I finished today. This is a Narrowband "Hubble Palette" image of M8 the Lagoon Nebula. I'll redo it for a bit better resolution but for my first ever Narrowband image it looks OK.
The Lagoon Nebula (catalogued as Messier 8 or M8, and as NGC 6523) is a giant interstellar cloud in the constellation Sagittarius. It is classified as an emission nebula and as an H II region. The Lagoon Nebula was discovered by Guillaume Le Gentil in 1747 and is one of only two star-forming nebulae faintly visible to the naked eye from mid-northern latitudes. Seen with binoculars, it appears as a distinct oval cloudlike patch with a definite core. A fragile star cluster appears superimposed on it. The Lagoon Nebula is estimated to be between 4,000-6,000 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 emanates 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. In 2006 the first four Herbig-Haro objects were detected within the Hourglass, also including HH 870. This provides the first direct evidence of active star formation by accretion within it. Or full sized image here: http://api.ning.com/files/2KKUOu2hs3...dianM8NB22.jpg
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12-06-2012, 08:22 PM | #158 |
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Today's Image I finished. From APOD: To the eye, this cosmic composition nicely balances the Bubble Nebula at the lower right with open star cluster M52. The pair would be lopsided on other scales, though. Embedded in a complex of interstellar dust and gas and blown by the winds from a single, massive O-type star, the Bubble Nebula, also known as NGC 7635, is a mere 10 light-years wide. On the other hand, M52 is a rich open cluster of around a thousand stars. The cluster is about 25 light-years across. Seen toward the northern boundary of Cassiopeia, distance estimates for the Bubble Nebula and associated cloud complex are around 11,000 light-years, while star cluster M52 lies nearly 5,000 light-years away. The wide telescopic field of view spans about 1.5 degrees on the sky or three times the apparent size of the Full Moon. AG Optics 12.5 Newt Apogee U16 300 Pics about 30 hours of exposure
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12-06-2012, 09:30 PM | #159 |
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Stupid question: Does your telescope invert the image?
BTW, you are fantastic at what you do. I thought I would tell you again for the 11tybillionth time. Do you take photos for any publications? |
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12-06-2012, 09:32 PM | #160 |
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Awesome pics, Dave!
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12-07-2012, 07:47 AM | #161 | |
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Since I got the observatory pretty much done I can start getting images done instead of constantly tweaking the observatory. Now hopefully I can work on getting stuff published.
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12-07-2012, 11:43 AM | #162 |
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This one just completely melts my brain when trying to comprehend.... Plasma jets that are 1 million light years long!
Explanation: Why does this galaxy emit such spectacular jets? No one is sure, but it is likely related to an active supermassive black hole at its center. The galaxy at the image center, Hercules A, appears to be a relatively normal elliptical galaxy in visible light. When imaged in radio waves, however, tremendous plasma jets over one million light years long appear. Detailed analyses indicate that the central galaxy, also known as 3C 348, is actually over 1,000 times more massive than our Milky Way Galaxy, and the central black hole is nearly 1,000 times more massive than the black hole at our Milky Way's center. Pictured above is a visible light image obtained by the Earth-orbiting Hubble Space Telescope superposed with a radio image taken by the recently upgraded Very Large Array (VLA) of radio telescopes in New Mexico, USA. The physics that creates the jets remains a topic of research with a likely energy source being infalling matter swirling toward the central black hole.
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12-07-2012, 01:05 PM | #163 |
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How old will you be in September 2036?
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12-07-2012, 03:02 PM | #164 | |
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No pictures of the Mutara Nebula?
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-Watching Eddie Podolak Quote:
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12-07-2012, 04:51 PM | #165 |
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Wow, the universe looks a lot like a blue hand. Awsome.
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