... 2014 December 9 . The Flame Nebula in Visible and Infrared . ... Explanation: What lights up the Flame Nebula? Fifteen hundred light years away towards the constellation of Orion lies a nebula which, from its glow and dark dust lanes, appears, on the left, like a billowing fire. ... The above false-color picture of the Flame Nebula (NGC 2024) was taken is a composite of both visible and infrared light , the later energy band being where a young star cluster becomes visible . ... About APOD | ...

... The Flame Nebula in Infrared . ... IPAC Explanation: What lights up the Flame Nebula? Fifteen hundred light years away towards the constellation of Orion lies a nebula which, from its glow and dark dust lanes, appears like a billowing fire. ... Rather the bright star Alnitak , the easternmost star in the Belt of Orion visible to the nebula's right, shines energetic light into the Flame that knocks electrons away from the great clouds of hydrogen gas that reside there. ...

... July 13, 1999 . The Flame Nebula in Infrared . ... Explanation: What lights up the Flame Nebula? Fifteen hundred light years away towards the constellation of Orion lies a nebula which, from its glow and dark dust lanes, appears like a billowing fire. ... Rather the bright star Alnitak , the easternmost star in the Belt of Orion visible to the nebula's right, shines energetic light into the Flame that knocks electrons away from the great clouds of hydrogen gas that reside there. ...

I-GALFA View of a Galactic Tangent Region . ... Image featured in NAIC Newsletter #46 . I-GALFA image of hydrogen gas in a tangent region outside the Sagittarius arm. ... Because we are viewing this gas in a direction closely aligned with (tangent to) its orbital motion, it appears to be moving away from us (we are orbiting the Galactic center with a similar speed, but our own motion in a different direction). ... The gas near 60 degrees longitude is being viewed tangent to its orbital motion. ...

I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

... GSAOI Home . ... Science . ... Deep imaging at J , H , and K is required to identify all stellar objects, brown dwarfs, and planetary mass objects in the central region of the Orion Nebula Cluster down to masses comparable to that of Jupiter. This is required to establish the initial mass function, i.e., the number of stars of each mass that have formed, in this region of intense massive star formation. ... The fields of the GSAOI detectors are shown as four green squares in each frame. ...

... More than 100 circumstellar gas clumps with ionized rims have been detected by HST studies of the Orion Nebula H II region (O'Dell & Wong 1996). Seven additional objects appear as dark oval silhouettes seen against background nebula light (McCaughrean & O'Dell 1996); these are very likely to be protoplanetary disks seen in absorption. ... Eight fields were observed in H and I-band continuum in the nearby H II regions NGC 2024, NGC 2264, and S155. ...

... Stars . ... Dark Nebula: The Taurus Molecular Cloud, in the constellation of Taurus (The Bull), lies about 450 light years from Earth. This image is a composite of observations made with submillimetre wavelengths, which reveal the heat glow of the molecular cloud (shown in orange tones) and in visible light to reveal the rich background of stars. Image credit: ESO/APEX (MPIfR/ESO/OSO)/A. Hacar et al./ ... The Orion nebula is a very famous nebula and we know that it is full of stars. ...

... Cocoon Nebula . IC 5146 + Sharpless 125 is a cluster (80 members) with an emission and reflection nebula that surrounds the star BD +46°3474 and is 3900 light years away in the constellation of Cygnus. The B-Type star BD +46°3474 that illuminates the region, is a foreground object to the large molecular cloud complex. The dark regions trailing away from the Cocoon are the Lynd's Dark Nebula 1035 and 1045 (LDN 1962). ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Astrophysics graduate student programs . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ... The Secret Inner Life of the Orion Nebula . ...

Venus in visible light (violet filter) 50k gif ; 25k jpg . ... image from Pioneer Venus 15k jpg ; 28k jpg ( caption ) . ... 7 pancake volcanoes, alpha region 227k gif ; 327k jpg . ... Lada Regio, 47 deg S, 25 Long, showing mountains and craters 121k gif ; 321k jpg . ... Gula Mons and Cunitz crater, flat image of gulacun.gif 250k gif ; 178k jpg . ... Crater Farm, Lavinia Region, small 107k gif ; 147k jpg . ... Central Ovida region, 1 deg s by 83 deg 191k gif ; 531k jpg . ... Pictures .. ... Venus .. ...

... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... A dark patch in Orion star formation . ... Located in the constellation Orion the Hunter, the Orion Molecular Cloud Complex, which is 1,500 light-years away, is the closest region of massive star formation to Earth and contains a treasury of bright nebulae, dark clouds, and young stars. ... Normally, a dark patch such as this would indicate a dense cloud of cosmic dust, obscuring the stars and nebula behind it. ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . This year's annual Geminid meteor shower is active during the period December 7 - 17, with the peak of activity occurring during the night of December 13th/14th. The Geminid shower is currently one of the best of the major annual meteor displays, usually having a high number of relatively bright, medium-speed (130,000 km per hour) shooting stars. ... Last Revised: 2009 December 7th . ...

... Sun images . ... Sun flares . ... Active areas . December : 2015 . ... The following regions with sunspots can be now observed on the Sun's surface . Group number . ... Group length (in degrees) . ... Coordinates and other characteristics of active regions are issued for December 09, 2015 00:31 UT The following H-alpha plages without spots can be currently observed on the Sun's surface . ... Coordinates and other characteristics of active regions are issued for December 09, 2015 00:31 UT . ...

... Home Lectures Lecture Series 2011-2012 Lecture Series 2011-2012 ? тАЬA Ray of Light in a Sea of Dark (Matter)тАЭ ? Charles Keeton . ... Charles Keeton , associate professor of physics and astronomy at Rutgers University and faculty director of the Aresty Research Center for Undergraduates , will speak to the AAA Friday, March 2, on тАЬA Ray of Light in a Sea of Dark (Matter).тАЭ The free public lecture begins at 6:15 p.m. in the Kaufmann Theater of the€а American Museum of Natural History . ...

... Meade Series 4000 Nebular Filters incorporate the very latest in interference coatings technology. ... Technical Basis of the Meade Broadband Nebular Filter: As shown in the transmission graph below, the Meade Broadband Nebular Filter strongly rejects the light of sodium- and mercury-vapor lights as well as natural airglow and auroral emissions. ... Meade Series 4000 Narrowband Nebular Filters . ... Meade Series 4000 Oxygen-III Nebular Filters . ... Meade Series 4000 Photo-Visual Color Filters . ...

CATS home ] [ Back to CATS list ] [ ftp ] . 1989AJ.. ... Title: The use of IRAS data to define H II regions Authors: HUGHES, V. A.; MACLEOD, G. C. Affiliation: AB(Queen's University, Kingston, Canada) Journal: Astronomical Journal (ISSN 0004-6256), vol. 97, March 1989, p. 786-800. ... 786H A total of 2298 IR H II regions in the IRAS Point Source Catalog are identified to a confidence level of 77 percent. ... Criteria are from Hughes McLeod (1989). of HII regions in IRAS catalog: . ... 0.0 . ...

Star formation is often best manifested by bright H II regions.These are regions of hydrogen which have been ionized by ultraviolet photons which are emitted from massive stars (typically stars more than 20 times the mass of the Sun). ... A narrowband filter image centered on this wavelength will then readily reveal these H II regions and hence the current sites of star formation in a galaxy, The luminous blobs that can be seen here are all H II regions . ... NGC 3558 Visual . NGC 3558 Infrared . ...

home publications > mercury . ... Publications of the ASP (PASP) . ... Exploring Invisible Skies . ... One of the tools these students are using?a radio telescope?explores an invisible part of the electromagnetic spectrum, radio waves. ... From listening to music on the radio to talking on our cell phones, radio waves are the means used to get information across large distances. ... Radio waves also give us information about the Universe complementing information obtained at other wavelengths. ...

SAS home . ... List of SAS threads . This thread contains a step-by-step recipe to extract a light curve of a point-like source for all the X-ray cameras, and to start a simple analysis tool. ... If the following files are available: a) RGS event list; b) RGS source list, just a single evselect command allows a user to create a light curve, corresponding to the extraction regions in the spatial and order images. set up your SAS environment (following the SAS start-up thread ) . ...