Astronomy Picture of the Day . Light Can Twist as Well as Spin . ... 19.11.2003 . ... Recently, however, it has been more broadly realized that photons can also have orbital angular momentum (OAM), an attribute classically analogous to the Earth orbiting the Sun as well as spinning on its axis. ... Light with OAM might be used to increase the information content of communication or to discern specific types of astronomical sources. ... NASA Web Site Statements, Warnings, and Disclaimers . ...

... 2003 November 19 . Light Can Twist as Well as Spin . ... Recently, however, it has been more broadly realized that photons can also have orbital angular momentum (OAM), an attribute classically analogous to the Earth orbiting the Sun as well as spinning on its axis. Pictured above , the wave-front of a photon with OAM is shown to be twisted, in contrast to the flat plane of zero OAM light. ... APOD Update: APOD mirror now on-line from Poland with archive in Polish. ... Archive | ...

... Donate to Support Science Literacy . ... 2016 Annual Awards . The ASP is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach. ... Shop the AstroShop . ... The Astronomical Society of the Pacific (ASP) is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach.. ...

... Club By-laws . ... Other Club Activities . ... Public Nights . ... Dr. James Green, NASA, Director Planetary Science will be our esteemed speaker on Tuesday, April 12, 2016 at 7:30 PM in Peyton Hall on the Princeton University campus. ... Our astronomers setup telescopes for public use at Communiversity in Princeton, Super Science Saturday at the NJ State Museum in Trenton and at various public events around Mercer County. ... Amateur Astronomers Association of Princeton, Inc., ...

... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...

... The Astronomical Data Analysis Software and Systems (ADASS) conference is held each year at a different hosting astronomical institution. The conference provides a forum for scientists and programmers concerned with algorithms, software and software systems employed in the acquisition, reduction, analysis, and dissemination of astronomical data. ... The 26th annual ADASS conference will be held from October 16th to 20th, 2016 at the Stazione Marittima Conference Centre , Trieste, Italy. ...

... Bad Astronomy . ... Mad Science . ... Site Info . ... Public Talks . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Who is this guy who calls himself "The Bad Astronomer?" ... First, yes, I am a real live astronomer (when people ask me what astronomers do, I tell them "They astronom !" ... These are emitted by powerful objects like black holes, exploding stars, and super-dense neutrons stars. ... Finally, am I really a bad astronomer? ... 2008 Phil Plait. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering 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 . ... Parkes radio telescope webcam . ... The Astronomical Society of Australia (ASA) was formed in 1966 as the organisation of professional astronomers in Australia. ...

... The active time at each angular bin is the sum over frames of the active time contributions from all CCD pixels, within the node-specific telemetry window, which overlap the surface of the bin. ... The active time, per frame, of a normal pixel is the full frame integration time multiplied by the node-specific fractional exposure; bad pixels contribute no active time. ... If an event is rejected for this reason only, then its pixels remain normal in the exposure map. ...

Next: HST Science: Structure Up: Scientific Results from Deconvolved Previous: Introduction . A major question in the minds of most astronomical users was discussed by Ivan King at this workshop - the issue of validation of the output from deconvolution. ... Fig. 1 shows an example of cross-validation, using data taken from Keel (1993). The image is of the faint radio galaxy 53W044 at redshift . ... For galaxies with smooth, symmetric structure, modelling allows an independent comparison. ...

Next: References Up: No Title Previous: Scientifically discovered God . What does it mean, God being discovered scientifically, or Superintelligence? And what is the future science dealing with an endlessly complicated world? ... But a human lexicon has also so important words as ``to understand'' and ``to believe''. ... And how the scientifically discovered God which has been inevitably reached by the modern simple science correlates with the religious God? ...

... Russian . The Astronomical Circular (Astronomicheskii Tsirkulyar) is published online by the Eurasian Astronomical Society and Sternberg Astronomical Institute, Moscow State University. ... All papers are refereed. All published papers are indexed in the SAO/NASA Astrophysics Data System . ... See this directory for sample files (template for a paper in English and in Russian , style file , sample figure and sample PDF file for a paper in English and in Russian ). ...

. Pulkovo Observatory of Russian Academy of Sciences is situated . near Saint-Petersburg. It was founded in 1839. 196140, Saint-Petersburg, Pulkovskoye chaussee 65/1 . English version . Russian version . This page has been accessed times since May 1, 1999.

... Milky Way . ... Science Fiction . ... Karl Guthe Jansky (1905-50) was born in Norman, Oklahoma; he was of French, Czech and English descent and grew up in Madison, Wisconsin.б  Jansky was the third of six children and was named after physicist Karl Guthe whom his father Cyril Jansky had worked for earlier in his career.An interest in science and physics was perhaps in KarlБЂ™s genes as Cyril Karl Jansky БЂњRadio Astronomy, I am your fatherБЂќ (Image credit:Wikimedia.org) . ...

... SET/IRSPEC flat=.. ... SKYSUB/IRS . ... However, in SKYSUB/IRS you can avoid caring about the dark if -- and only if -- you use this command to make a straight subtraction (see last example of TUTORIAL/SKYSUB), in which case the dark frame is effectively not used. ... SKYSUB/IRSPEC . ... When using this mode remember to apply -- using the above command -- the same calibration to the object and to the standard otherwise you will not be able to run FLUX/IRSPEC. ... RECTIFY/IRSPEC . ... STANDARD/IRSPEC...

... Home Observing Charles Dana Discovery Center, Central Park . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Charles Dana Discovery Center . ... 6:30тАУ8:00 p.m. The Charles Dana Discovery Center is just inside Central Park, near 110th Street between Lenox and Fifth avenues ( map ). ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... BOOKS . ... Short Bio for Lars Lindberg Christensen . Lars is an award-winning astronomer and science communicator. ... Lars has more than 200 publications to his credit, most of them in popular science communication and in its theory. ... Lars received the Tycho Brahe Medal in 2005 for his achievements in science communication. ... Lars is a science communication specialist heading the ESO education and Public Outreach Department (ePOD) in Munich, Germany. ...

... Two computers in the same network are usually linked via a single physical cable. When they communicate over the network, the programs in each computer that take part in the communication are linked via a virtual connection , a sort of imaginary cable. ... When it notices an incoming network login (i.e., it notices that it gets a new virtual connection to some other computer), it starts a new process to handle that single login. ...

Summary of Research Statement Vladimir Podolskii In this pro ject we plan to work in several directions in Computational Complexity theory which are mostly connected through the methods and techniques. ... The main ob jective in this area is to understand the computational power of this model and in particular to prove lower bounds on the complexity parameters of threshold gates and threshold circuits computing explicit functions. ... We plan to continue this work. ...

... 2000 July 13 . LP 944-20: A Failed Star Flares . ... Explanation: The tiny spot circled on the right actually represents a big astronomical discovery -- the first detected flare from a failed star. Failed stars, termed brown dwarfs in astronomers' parlance , are too low in mass to ignite nuclear hydrogen burning in their cores, yet still shine feebly as the energy from their gravitational collapse is converted to heat and light. ... How did a failed star produced such a high-energy flare ? ...