... Go to This section of the glossary . ... APHELION : The point in a planet's orbit where it is farthest from the sun. ... It melts at 83.95 K, and boils at 87.45 K. Many people don't realize that argon makes up a full 1% of our atmosphere, while carbon dioxide is only a fraction of a percent of our atmosphere. ... COMET: An object moving about the sun in an eccentric orbit and composed of materials which, on warming up near the sun, form a "tail" which always points away from the sun. ...
... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Observing . ... Astronomy for Kids . ... Oxygen discovered at Saturnт??s moon Dione . ... Dione, one of Saturnт??s icy moons, has a weak exosphere that includes molecules of oxygen, according to new findings from the Cassini-Huygens mission. ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....
... Imaging GRIN Rod Lens (HAG's) | Relay Rod Lens (LAG's) | ... The Refractive Index Distributions (RID) in GRIN lens preforms are made by multi-stage optimized ion-exchange diffusion between silicate mineral glasses and salt melts. ... In the LAG lenses - L ow A perture GRIN the nature of the changing of refractive index in glass via ion-exchange lies mainly in molecular volume increase. ... LAG lenses are specially treated to create the dark anti-flick surface coating (Fig.2). ...
Next: A Coronagraphic Search for Up: NICMOS Science Previous: NICMOS Science . ... A search for previously unknown low-mass (giant planet and brown dwarf) companions to stars in the solar neighborhood, and circumstellar dust disks around main sequence stars by direct coronagraphic imaging has been undertaken by the NICMOS Instrument Definition Team (IDT). ... The problem in the target acquisition process resulted in degraded pointing and target centration performance for these observations. ...
... Telescopes . ... LS Series . Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... ETX Series . ... Back Cell Adapter - ETX to SCT Thread . ... Allows accessories that require a SCT thread to be attached to the ETX series of telescopes, including focal reduces and off-axis guiders. ... Allows accessories that need SCT threading to be attached to ETX series . ...
... Comets and Asteroids . ... Earth Satellites . ... Illustration of how NASA could capture an asteroid . ... The meteor was quite small compared to some of the objects out there that could potentially hit the Earth, thus if we understood asteroids it could be potentially life-saving! ... This mission could start as soon as the early 2020s with NASA already simulating an asteroid mission to figure out how astronauts might undertake a spacewalk on it. ... Can NASA lasso an asteroid back to Earth? ...
Astronomical Society of the Pacific Conference Series-Instructions for Authors Using Microsoft Word Lisa B. Roper and Enid L. Livingston Astronomical Society of the Pacific Conference Series, N221 ESC, Brigham Young University, Provo, Utah 84602-4463, USA J. Ward Moody Department of Physics and Astronomy, Brigham Young University, N484 ESC, Provo, Utah 84602-4463, USA Abstract. ... Please use only the included styles to format your paper. ... Within parentheses use "(Author 1 & Author2 1999)". ...
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Ссылки http://www.astrosociety.org/events/2007mtg/wordinstructions.doc -- 69.0 Кб -- 05.08.2010 Похожие документы
Astronomy Discussion Forums . Forums: . Atm ћ Astrophotography ћ Blackholes ћ Blackholes2 ћ CCD ћ Celestron ћ Domes ћ Education . ... Discussion Forums . ... Re:Can Someone Tell Me The Name Of This Star? Forum List | ... Post Message | ... my astronomy a.t.m. site . ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...
Dynamic Shack-Hartmann System RAPID V. G. Orlov, V. V. Voitsekhovich Instituto de AstronomМa, UNAM, MИxico CONACYT project E9507-1020P UNAM PAPIIT IN104910 Telescopes OAN OAN- SPM 2.1m telescope 1.5m telescope 0.84m telescope 2.1m telescope OAN-Tonanzintla 1m telescope Astronomical site SPM Observing statistics 1982-2002 (Tapia+ 2007 ) Photometric nights : 64.1% Spectroscopic ... Rapid - Dynamic Shack-Hartmann All modern telescopes demand installation of adaptive system. ...
. Comment on J0646+4451 . An extremely high redshift quasar. An estimate of the apparent angular proper motion of the secondary component gives ~0.09 mas/year, based on two previous epochs (Gurvits et al. 1992; Xu et al. 1995). VLBApls home page . Last modified: 16 Oct 2000
... 000, 112 (2009) Printed 11 February 2010 A (MN L TEX style file v2.2) Analytical approximations of K -corrections in optical and near-infrared bands I1gor V. Chilingarian1 2 ,2,3 , Anne-Laure Melchior 1,4 and Ivan Yu. ... Received 2010 February 01; in original form 2009 August 14 ABSTRACT To compare photometric properties of galaxies at different redshifts, the fluxes need to be corrected for the changes of effective rest-frame wavelengths of filter bandpasses, called K -corrections. ... Table 1. ...
Фотографии и видео - внизу страницы. ... Архив фотографий из похода - файл называется 08_kavkaz.zip . Размер файла 593 Мб . ... Например 20100806_124315.jpg - 6 августа 2010 года, 12ч 43м 15сек. ... Разрешение кадра 1280x720 пикселей, размер файла 1.66 GB . ... Файл в формате mpeg-2 (как DVD). kavkazHD.avi . Разрешение кадра 1280x720 пикселей, размер файла 655 Mb . ... Разрешение кадра 720x576 пикселей, размер файла 668 Mb . ... Разрешение кадра 720x400 пикселей, размер файла 296 Mb . ...
... Сообщения без ответов . ... Последнее сообщение . ... k2s Перейти к последнему сообщению . ... Asya_Schtirlitz Перейти к последнему сообщению . ... DeZeRt Перейти к последнему сообщению . ... Последнее сообщение Re: Химия. ... Vasisualiy57 Перейти к последнему сообщению . ... Ане4ка Перейти к последнему сообщению . ... bootal Перейти к последнему сообщению . ... Последнее сообщение Re: Равноденствие 2010 . Capricornus Перейти к последнему сообщению . ... Dmitry Перейти к последнему сообщению . ...
Mon. Not. R. Astron. Soc. 349, 13971418 (2004) doi:10.1111/j.1365-2966.2004.07619.x The 2dF QSO Redshift Survey XII. The spectroscopic catalogue and luminosity function S. M. Croom,1 R. J. Smith,2 B. J. Boyle,1 T. Shanks,3 L. Miller,4 P. J. Outram3 and N. S. Loaring4,5 1 2 3 4 5 Anglo-Australian Observatory, PO Box 296, Epping, NSW 1710, Australia Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD Department of Physics, University of
. Major radius . R = 0.36 m . Minor radius . a = 0.24 m . Aspect ratio . A=R/a=1.5 . Beta toroidal . Magnetic field . B tor . Current . I p . Pulse time . t pulse < 0.3 sec . Last update: Wednesday, 3 Octomber, 2012 .
CHAPTER 13: Space Business and JSC ouston and the Texas of the 1980s became something different than they had been in the 1950s, in part because NASA and JSC gave them the opportunity to be different. ... However, when oil prices quickened and the economy improved at the close of that decade, Owen Morris (a former JSC aerospace engineer and a cofounder of Eagle Engineering) recalled that Houston interest in space declined correspondingly. ... That company was itself a NASA/JSC spin-off. ...
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Ссылки http://www.jsc.nasa.gov/history/suddenly_tomorrow/chapters/Chpt13.pdf -- 309.9 Кб -- 10.11.2004 Похожие документы
... One of those memories takes me back to the days when the ATMoB held observing sessions at Drumlin Farm in Lincoln. ... This 32-inch mirror blank was apparently cast specifically for the US Air Force, to be used in a satellite surveillance program. ... Besides, how many 32-inch telescopes does one need? there in December of 2012, where the observatory staff, led by Paolo Valesa, promptly began working on a large mirror cell to attach this to the existing built telescope. ...
Stan Honda Full moon at AAA Spring Starfest, 2015 Journal of the Amateur Astronomers Association of New York June 2015 Volume 64 Number 6 ISSN 0146-7662 Goldilocks Planets AMNH FRONTIERS LECTURE By Richard Brounstein This porridge is scorching hot. ... The Kepler Space Telescope is devoted to finding planets transiting their star. ... Par k 31st June 2015 WHAT'S UP IN THE SKY AAA Observers' Guide By Tony Faddoul June's Evening Planets: Venus can be found in Cancer the Crab until 11 PM. ...
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Ссылки http://www.aaa.org/EyepieceFiles/aaa/2015_06_June_Eyepiece.pdf -- 1412.2 Кб -- 28.05.2015 Похожие документы
The Official Publication of the Amateur Astronomers Association of Princeton Director Rex Parker ( 609 ) 730-0670 rex_a_parker@msn.com Assistant Director John Miller ( 609 ) 252-1223 jmiller@princetonastronomy.org Treasurer Program Chairman Brian VanLiew Ken Kremer (908) 281-7957 ( 609 ) 558-4955 bvanliew@sensingstrategies.com ken@princetonastronomy.org Secretary Ludy D'Angelo ( ... Our guest speaker will be Dr. Guy Consolmagno of the Vatican Observatory. ... Observatory and Springtime Galaxies. ...
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Ссылки http://www.princetonastronomy.org/newsletters/05_2007sidereal.pdf -- 674.1 Кб -- 02.05.2007 Похожие документы