... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

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... Contents of the Tycho Catalogue Over view of the Tycho Catalogue: The Tycho Catalogue provides astrometr y (positions, parallaxes and proper motions) and two-colour photometr y (in B T and VT ) for more than one million stars brighter than VT = 11.5 mag. ... Stars in ver y dense clusters and other dense fields thus leaving the resulting Tycho Catalogue incomplete in such regions `R' in Field T42). ... The number of non-Hipparcos stars with Tycho Catalogue parallaxes larger than 40 + 4 mas is 1245. ...

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• http://vega.inp.nsk.su/~inest/halometer/Volpi_FiberOpticsRevAa.pdf
• http://vega.inp.nsk.su/~inest/halometer/SGC%20Scintillation%20Operating%20Manual%201206.pdf
• http://vega.inp.nsk.su/~inest/YankeeRobotics/KAF-6303E.pdf

... Тhis new concept touches our simple lives, yet for those intrigued by the natural sciences, especially experts deeply engaged in the 'eternal' questions of general geology and astronomy, it is all the more fascinating. The problems to be faced by any theory for the formation of the Solar System . Any theory has to account for certain rather tricky facts about the Solar System. These are in addition to the obvious facts that the Sun is at the centre with the planets in orbit around it. ...

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• The basic stages in the Earth's pre-geological development

... The Sun has come all of one day away from breaking its record for the longest period of inactivity for the last decade - reaching a mid-summer low and falling into yet another state of "hibernation". Yesterday, on the first day of autumn, new sunspots appeared on the surface of the Sun following an absence of almost 50 days. ... The first low lasted 51 days, from 21 July until 11 September last year. ... Now, almost a year later, it seems the Sun has hit a new low almost as "deep" as the first. ...

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• The Sun - a summer without activity
• A Flame Over the Sun
• Project's diary

The Official Publication of the Amateur Astronomers Association of Princeton Director John Miller (609) 252-1223 jmiller@princetonastronomy.org Assistant Director John Church (609) 799-0723 j.church@mindspring.com Treasurer Program Chairman Michael Mitrano Ludy D'Angelo 609-737-6518 (609) 882-9336 michael .mitrano@worldnet.att.net ldangelo106@comcast.net Secretary Editors Ron Mittelstaedt Bryan Hubbard and Ira Polans (609) 771-6981 (732)-469-7698 and (609)448-8644 ...

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• Amateur Astronomers Association of Princeton

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107. Электронная библиотека астронома-любителя. RU.SPACE.NEWS - архив за 11 марта

108. FAQ

109. Radioastrophysical Observatory ISTP RAS SB

110. http://www.laspace.ru/rus/WP0709_v1.pdf

111. To gravitational wave discovery with LIGO

112. http://www.tunguska.ru/nc/nlc-luna/Schroeder_comments.pdf