... Tonight's Sky . ... The Magazine . ... Star Atlas . ... An artificial comet holds secrets to Earths life . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... The planet has extreme temperature swings and perhaps active lava flows. ... A digital supplement to Astronomy magazine. ... Join TravelQuest International with Astronomy and Discover magazines on one of three great tour options surrounding this celestial spectacle . ... Astronomy Magazine . ...

... There has been a heated public discussion in the past few years about whether our ninth planet is really deserving of the name. Since Pluto orbits a star, and is much less luminous, it certainly satisfies the definition we have above. The problem is actually not with Pluto, but with a very large number of other bodies in our Solar System which also satisfy this definition, but which are not called planets. Perhaps the most notable of these is Ceres, the largest asteroid. ... Planet . ...

Peremennye Zvezdy", . ... Star Name: . GSC 3710-00312, USNO-A2.0 1425-04252279 . ... Variability type: . ... USNO-A2.0 1425-04252279 is located at the distance of 15?.7 from the X-ray source 1RXS J031707.9+572942, which is larger than the position error of the source (12?), but its hardness ratio HR1 = 0.03 0.29, typical of chromospherically active stars, and its character of variability allow us to assume that the star is related to the X-ray source. ... Eclipsing variability . Sine wave 1 . ...

... CBET now has an M31 novae page , M33 novae page , and an M81 novae page . ... Also, see W. Pietsch's M31 (apparent) optical nova catalogue , M33 novae catalog , and M81 novae catalog Please note that I do not keep track of galactic novae . Nova M81 2016-04a? (= PNV J09560598+6900401 ), ATEL 8904 discovered 2016/04/02.876 by Kamil Hornoch and H. Kucakova . ... Nova M31 2016-03a? (= PNV J00421695+4059098 ), CBAT TOCP discovered 2016/03/01.721 by unknown . ... other extragalactic Novae from 2016 . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Aurora . ... Corona . Fireballs . ... Zodiacal Light . ... The first thing to do is get acquainted with what the night sky looks like. ... The National Schools Observatory web site has very good horizon views of the sky for the current night. ... If the object is moving slowly across the sky then it may be one of the larger satellites. ... Cloudbait Observatory - October 2002 . ... October 2003 Aurora at Armagh . ...

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...

Astronomy Discussion Forums . ... Need All Claims Be Tentative? ... Here is an issue: does a particular representation correctly match the pattern it is claimed to represent went viewed by method 'x', within the limits of precision given by the definitions of the original pattern, the representation, and the method of viewing (x)? ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... The Advanced Visual Systems (AVS) has been used to explore lines of sight through the complex geometry of the Green Bank Telescope (GBT). Perspective images computed by AVS from geometric descriptions of the components of the telescope have been used when selecting locations for the installation of laser rangefinders and when checking geometrical relationships along the optical path. ... The AVS ``camera'' could be commanded to look from any location in the scene toward any another location. ...

... WSDL for http ://vo.astronet.ru/ws/wcsfix/wcsfix.cgi created by Pod:: WSDL version: 0.05 on Sat Jan 27 20:10:18 2007 -- wsdl :definitions targetNamespace= http ://vo.astronet.ru/wcsFixService xmlns:impl= http ://vo.astronet.ru/wcsFixService xmlns: wsdlsoap = http ://schemas.xmlsoap.org/ wsdl /soap/ xmlns: wsdl = http ://schemas.xmlsoap.org/ wsdl / xmlns:soapenc= ...

... НЕПРЕРЫВНОГО МАТЕМАТИЧЕСКОГО ОБРАЗОВАНИЯ . ... Кружок ?Олимпиады и математика? ... Московская математическая олимпиада . Заочный математический конкурс . ... Устные математические олимпиады . Олимпиады по программированию . Математический праздник . Математические регаты . ... Математические бои . Олимпиада по геометрии им. И.Ф.Шарыгина . ... Программа ?Math in Moscow? Научные конкурсы . Творческий конкурс . ... График олимпиад . ... XXVII Математический праздник . ...

... The European HST Archive has been moved to ESA's European Space Astronomy Centre ( ESAC ), Spain, where most of ESA's Space Science Archives are located and operated from. ... The Space Telescope European Coordinating Facility (ST-ECF), jointly operated by ESA and the European Southern Observatory ( ESO ) was, until the end of 2010, the European HST science facility, supporting the European astronomy community in exploiting the research opportunities provided by the Hubble Space Telescope. ...

University Satellites and . Space Science Education . ... The project of the scientific - educational small satellite for research of Earth upper atmosphere density . ... At the end of 80th years in Kuybishev aviation institute (nowadays the Samara State Aerospace University) has been developed the project of small spherical satellite " PION ", intended as for a calibration of ground resources of tracing behind space objects, and for refinement of density of upper atmosphere of the Earth. ...

20-23 September 2016, St.Petersburg, Russia . ... Registration to the Symposium will be held in the main building of the Institute of Applied Astronomy of the Russian Academy of Sciences on Monday 19th September, from 18:00 to 21:00 . ... Registration will also be available on Tuesday September 20th from 8:00 to 9:00 at the conference venue. ... Conference dinner will take place in the Palace of Grand duke Vladimir (Academics House) on Wednesday 21th September, from 19:00 to 22:00 . ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Products . Telescopes . LX850 Series . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... MeadeтАЩs new LX70 Series offers high-quality German equatorially mounted telescopes with slow-motion controls and heavy-duty steel tripods. ... Coronado Accessories . ... Tripods and Piers . ... Dealer Locator . ...

... 795 Massachusetts Ave, Central Square Cambridge . ... Location: Cambridge City Hall, 795 Mass. Ave., Central Square Cambridge . Parking for volunteers will be available in front of Cambridge City Hall. ... You may be in the middle of the city, but that doesn't mean you can't see the stars! Join us in Central Square to experience sidewalk astronomy at its best. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

Home - News - Download - Documentation - Search - FTP . ... Macros . ... Using these macros also allows a simple find jump history: essentially a position stack is managed (as a string) - the entries (lines) in the string are handled as tag entries. ... The macros use other macro files: . ... Although I have implemented a Return to previous macro, I have not implemented a Goto to next in history list macro, for people who want to go backwards and forwards through their find jump history. ...

... CVS . ... ASM Kislovodsk . ... Anonymous CVS access through CVS protocol: . cvs -d :pserver:anonymous@curl.sai.msu.ru:/srv/cvs/cvsroot . Anonymous CVS browse through ViewVC: . ... Rs485 CVS . ... ASM Dome demon CVS . ... CVSROOT at curl.sai.msu.ru is located in /srv/cvs/cvsroot . You may access to CVS repository via SSH only using your curl's account login/password. ... export CVSROOT=curl.sai.msu.ru:/srv/cvs/cvsroot . ... CVS_RSH=ssh cvs -d user@ curl.sai.msu.ru:/srv/cvs/cvsroot command . ...

. Next: Acknowledgements Up: No Title Previous: Science with CXO . The Chandra X-Ray Observatory will have a profound influence on astronomy and astrophysics. The Observatory is open to use by scientists throughout the world who successfully propose specific investigations. Data will be available through the Chandra X-ray Center (CXC), directed by Dr. H. Tananbaum, and located at the SAO. Sergei B. Popov . Tue Dec 7 18:45:32 MSK 1999

. english || русский . Main . Location . Telescope . Instruments . Program . Science . Publications . Images . Photos . Links . The following focal instruments are currently available at the telescope: . CCD-photometer . TFOSC -- medium and low resolution spectrometer . ( The page at TUG ) . High resolution echelle-spectrometer in coude focus . High Energy Astrophysics Department 2016 IKI RAN

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 . ...