... NGC 2244: A Star Cluster in the Rosette Nebula . ... High energy light from the bright young stars of NGC 2244 ionizes the surrounding hydrogen gas clouds to create the red emission nebula appearance. ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: star cluster - Rosette Nebula - emission nebula - open cluster - NGC 2244 . Publications with words: star cluster - Rosette Nebula - emission nebula - open cluster - NGC 2244 . ... Cygnus Without Stars . ...

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• Астронет > NGC 2244: A Star Cluster in the Rosette Nebula
• IC 410 and NGC 1893
• In the Center of the Rosette Nebula

... 2000 August 22 . NGC 2244: A Star Cluster in the Rosette Nebula . ... Explanation: In the heart of the Rosette Nebula lies a bright open cluster of stars that lights up the nebula. The stars of NGC 2244 formed from the surrounding gas only four million years ago and emit light and wind that define the nebula's appearance today. High energy light from the bright young stars of NGC 2244 ionizes the surrounding hydrogen gas clouds to create the red emission nebula appearance. ... About APOD | ...

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• APOD: 2002 August 14 - Giant Emission Nebula NGC 3603 in Infrared
• APOD: 2002 March 17 - NGC 2244: A Star Cluster in the Rosette Nebula
• APOD: 2000 August 2 - At the Edge of the Crescent Nebula

... Armagh Planetarium . ... Universe . ... Posted on October 1, 2010 | ... Before the modern era of technological astronomy, to know anything [ ] . Continue Reading.. ... 2 Comments In, say 1975, there was only one kind of ?stuff? in the Universe, matter made of protons and neutrons. ... Newer Entries . Hello, IтАЩm Colin, welcoming you to Astronotes, the PlanetariumтАЩs official blog. Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

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• HST | Astronotes - Part 4
• Our Galaxy | Astronotes - Part 5
• NGC4666: Secrets of a Starburst Galaxy | Astronotes

... 2000 August 4 . M15: Dense Globular Star Cluster . ... In fact, only 40,000 light-years away in the constellation Pegasus, M15 is one of the most densely packed globular star clusters in our Milky Way Galaxy. This stunning Hubble Space Telescope image of M15 shows thousands of individual stars across the central 10 or so light-years of the cluster, also cataloged as NGC 7078. ... Globular star clusters harbor from a hundred thousand up to a million stars and roam the Milky Way halo. ...

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• APOD: May 22, 1996 - Star Cluster in the Rosette Nebula
• APOD: 2000 August 30 - The Brown Dwarfs of Orions Trapezium
• APOD: August 6, 1998 - Infrared Horsehead

... The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology . ... The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years ) away. ... Data for these stars are listed in a table below. ... Yes . ... WEBDA Pleiades cluster data . ... M45: The Pleiades Star Cluster (2007 November 18) ...

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home publications > mercury . ... Big Clusters, Tiny Galaxies . ... Astronomers struggle to understand why giant star clusters form in the tiniest of galaxies . ... These clusters are probably young versions of globular clusters, but they are commonly called super star clusters. Seven dwarf galaxies within 16 million light-years have formed super star clusters, with one of these galaxies, NGC 1569, possessing two young clusters. ... Super star clusters have a lot to tell us about star formation. ...

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• ASP: Bright-Lights, Big-City, Overcast Survival Guide
• ASP: By the Light of the Moon
• ASP: Lighting the Nebulae

... Tadpole Emission Nebula and the Flaming Star Nebula . The constellation of Auriga harbors the cluster NGC 1893 which contains the Tadpole Nebula (IC 410). ... The Flaming Star Nebula, IC 405, is the magenta/purplish area and is the reflection portion of this nebulous region. 5nm Narrowband filters; H-alpha: O-III: S-II - 60: 60: 40 minutes x 600-second sub frames, Total= 2-hours 40-minutes, binned 1x1. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

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• The Brightness of the Night Sky
• The hidden fires of the Flame Nebula* | ESO
• Los Cielos de Am , The darkest sky and the two galactic hemispheres

... Bad Astronomy . Misconceptions . ... Bad Astronomy : "We're light years more advanced than our competition!" ... Even the closest astronomical object, the Moon, is 400,000 kilometers away! ... A beam of light will travel 9,500,000,000,000 kilometers in one year. This distance is defined as a light year ; the distance light travels in a year. ... This is another example of Bad Astronomy; like a light year, a parsec is a unit of distance, not time (to be specific, it equals 3.26 light years) . ...

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• Phil Plait's Bad Astronomy: Bitesize Astronomy
• Phil Plait's Bad Astronomy: Bad News

GALAXIES cenA .tiff 40 Bright Radio Galaxy M31.tiff Nikon Andromeda Galaxy (note HII regions in spiral arms) ngc6744.tiff 40 NGC 6744 a face-on spiral clouds_20d.tiff H'blad The Magellanic Clouds our nearest neighbours Lmc_7.tiff Nikon The Large Magellanic Clouds Lmc_zoom.tiff Nikon Detail of previous image smc_7.tiff Nikon The Small Magellanic Clouds smc-zoom.tiff Nikon Detail of previous image 30dor_40_BVR.tiff 40 The 30 Dor ... B [OIII] Halpha trifid.tiff 40" The Trifid Nebula. ...

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• publications
• Blue Straggler Stars
• IAU Commission #34 (Interstellar Matter)

... Embedded within this view are 2,753 star clusters. The view is 61,600 light-years across and contains images of 117 million stars in the galaxy's disk. Bottom-Left] An enlargement of the boxed field in the top image reveals myriad stars and numerous open star clusters as bright blue knots. Hubble's bird's-eye view of M31 allowed astronomers to conduct a larger-than-ever sampling of star clusters that are all at the same distance from Earth, 2.5 million light-years. ...

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• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B5A7C982A-3ED2-4E91-A6CA-27FE3029C0B0%7D
• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B203AE416-3031-4F3F-AAE0-3D91BC66084E%7D
• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B7AAC2165-B2F3-4448-BCE8-F2C6CBA78534%7D

... Abstract . ... Dean Hines, Space Science Institute . Imaging Scattered Light from Debris Disks Discovered by the Spitzer Space Telescope Around 20 Sun-like Stars . ... Massimo Robberto, Space Telescope Science Institute . ... Bill Sparks, Space Telescope Science Institute . ... Thomas Puzia, Space Telescope Science Institute . ... Keith Noll, Space Telescope Science Institute . ... Adam Riess, Space Telescope Science Institute . ... Tom Brown, Space Telescope Science Institute . ... Past weeks: . ...

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• HST this week: 231
• STScI Preprint #1297
• HST this week: 212

Photon Scattering: Basic Principle of Photon Scattering . Audio Narration is available . No Scattering: Photon Source and Detector . ... For optical photons, scattering goes as wavelength to the -4 power. In the case of blue photons compared to red photons, this means that blue photons are about 10 times more likely to get scattered than red photons. ... Watch the blue photons scatter away from the detector . ... Interstellar dust make stars appear redder than they really are . ...

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• Low Surface Brightness Galaxy Gallery
• Astronomy HyperText Book: Stellar Clusters
• galaxies, Hubble sequence

... a spiral galaxy some million light years away, made by combining images . ... 1st February using the Armagh Robotic Telescope at the Armagh Observatory. ... Image credit: Simon Jeffery. Astronomers Simon Jeffery and Jack Wright have obtained their first images of deep-space objects using a new тАЬroboticтАЭ telescope at Armagh Observatory. ... Simon Jeffery, project scientist for the new telescope, said: "After two years of hard work, it is very satisfying to see the first images looking so good. ...

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• Objects in the Sky
• Refereed Journal Publications 1999
• Light Pollution in Ireland: Monday 8 September | International Year of

Galactic Wind Shells and High Redshift Radio Galaxies . ... M.Krause . Astronomy & Astrophysics, v.436, 845-851 . Very Light Jets II: Bipolar large scale simulations in King atmospheres [small version] . ... Simulations of Astrophysical Jets in Dense Environments . M.Krause, V.Gaibler & M.Camenzind . in: High Performance Computing in Science and Engeneering '05 eds.: E.Krause, W.J ger & M.Resch. ... M.Krause & M.Camenzind . ... Martin Krause & Paul Alexander . ... Martin Krause . ...

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• Astrophysics Group AMI Publications
• Astrophysics Group AMI Science
• Martin Krause - Large Scale Very Light Jet Simulation

... ISC Kosmotras . ... Comments, Opinions Publications Dnepr Program . Dnepr launch record 17 August 2011. ... Launch of Dnepr LV carrying Sich-2 and BPA-2 (State Space Agency of Ukraine), Nigeriasat-2 and Nigeriasat-X (SSTL, Great Britain), RASAT (Space Research Technology Institute of Turkey (TUBITAK UZAY)), EDUSAT (La Sapienza University of Rome, Italy), and Aprizesat-5 and Aprizesat-6 (SpaceQuest, USA) payloads is scheduled for 17 August 2011, at 10:12:20 decreed Moscow time (7:12:20 UTC). ...

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• Launch Campaign of DubaiSat-2 Cluster Mission
• Launch Date of DubaiSat-2 cluster mission
• Dnepr Cluster Mission 2013

... ApJ, 571, 843-855 (2002). ... In: URSI XXVIIth General Assembly, Maastricht, 17-24 August, 2002, p1326.pdf (2002). ... In: URSI XXVIIth General Assembly, Maastricht, 17-24 August, 2002, p2172.pdf (2002). ... In: URSI XXVIIth General Assembly, Maastricht, 17-24 August, 2002, p0115.pdf (2002). ... TINGAY, S.J., PRESTON, R.A., JAUNCEY, D.L. & MURPHY, D.L. "The subparsec-scale structure and evolution of Centaurus A", In: URSI XXVIIth General Assembly, Maastricht, 17-24 August, 2002, p2156.pdf (2002). ...

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• ATNF Science Highlights
• Evolutionary Paths in Galaxy Morphology
• ATNF Daily Astronomy Picture

... D. J. Burke and J. Patrick Henry . The Astrophysical Journal, submitted. ... S. Brough, W. J. Couch, C. A. Collins, T. Jarrett, D. J. Burke , R. G. Mann . ... D. A. Wake, C. A. Collins, R. C. Nichol, L. R. Jones, D. J. Burke . ... R. Sadat, A. Blanchard, S. C. Vauclair, D. H. Lumb, J. Bartlett, A. K. Romer, J.-P. Bernard, M. Boer, P. Marty, J. Nevalainen, D. J. Burke , C. A. Collins, R. C. Nichol, . ... S. Majerowicz, D. M. Neumann, A. K. Romer, R. C. Nichol, D. J. Burke , C. A. Collins . ...

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• SAO Summer Intern Program Projects, 2011
• dictionary
• SAO Summer Intern Program Projects, 2015

Our publications in 2007 year Pustilnik, S. A.; Tepliakova, A. L.; Kniazev, A. Y.; Burenkov, A. N.; SAO; Russia; SAAO; Africa, South . eprint arXiv:0712.4205, submitted to Astrophysical Bulletin (SAO) (12/2007) . Pustilnik, S. A.; Tepliakova, A. L.; Kniazev, A. Y. eprint arXiv:0712.4007, submitted to Astron.Lett (12/2007) . ... Kniazev, A. Y.; Pustilnik, S. A.; Zucker, D. B. eprint arXiv:0707.4285, submitted to MNRAS (07/2007) . ... eprint arXiv:0707.4288 (07/2007) . ...

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• "Structure" publications in 1999 year
• "Structure" publications in 2004 year
• Old "Structure" publications

You Can Make Stellar Images Brighter . Articles | ... A few months ago I wrote an article titled "You Can?t Make Them Brighter". So why am I now writing that you can make them brighter. ... The image of a focused star is actually a small disk called the Airy disk, named after the 19 th century scientist Sir George Airy. ... For a given aperture, a smaller Airy disk means that the light is focused to a smaller disk and is therefore brighter. ... www.astronomy.net . About Astronomy Net | ...

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• Astronomy articles, forums, listings, and other resources about Astronomy.
• The Astronomy Shop - Books - by Astronomy Net
• Astronomy Terms - To Help You Study The Universe - an Astronomy Net Article