Astronomy Picture of the Day . Clyde W. Tombaugh: 1906-1997 . ... He is pictured above in 1995 in his backyard with a telescope he knew well - a 9 inch Newtonian reflector he built in 1927 with discarded farm machinery and car parts. Using this telescope under the dark night skies of Western Kansas , he made drawings of Mars and Jupiter and submitted them to Lowell Observatory in 1928. ... NASA Web Site Statements, Warnings, and Disclaimers . ... U. Based on Astronomy Picture Of the Day ...

... One of the major activities going on at my Mira observatory at Sava, Italy, is to record deep sky CCD images for a personal atlas I'm currently working on. ... Images are made using a SpectraSource CCD HPC 1 camera equipped with a Texas Instrument TC215 chip, 1024 square, 12 micron pixels size, at 16 bit. ... After a 40sec exposure, the PC monitor showed a faint glow just above the camera termal noise. ... The image showed clearly a star in the galaxy core, of magnitude 14.5, some 50sec. ...

... Laplace's . Demon . ... Chaos? ... Equation . Fractals . ... A scientific revolution began in the seventeenth century with Sir Isaac Newton's development of the calculus and the laws of classical mechanics. ... For the first time, Newtonian physics made it possible for scientists to determine the dynamics of bodies by simple equations. ... Laplace's Demon" concerns the idea of determinism, namely the belief that the past completely determines the future. ...

... Vendors . ... Online Registration . ... Warren Rupp Observatory . ... The Hidden Hollow weekend Star Party at Warren Rupp Observatory is back again this year . ... As in previous years, speakers, contests, workshops, door prizes and vendors (we all love new astronomy toys) will be set up in Sky Lodge, along with tables and chairs - just right for a conversation on some of the finer points of astronomy. ... This year, we are offering group rates for clubs sending 4 or more members to Hidden Hollow. ...

. XMM-Newton Science Analysis System . bkgfit (ebkgmap-1.2) [xmmsas_20070708_1801-7.1.0] . Meta Index / Home Page / Description . The vector of amplitudes which minimizes is approximated by a Newtonian method in dimensions. In this method, the formula . where is an matrix of curvature terms given by . (3) . is iteratively inverted until it is judged to have converged. and can be expressed in closed form as . Subsections . Constraints on the model components: . XMM-Newton SOC/SSC -- 2007-07-09

... На форуме начался конкурс - Астрофотография месяца: АПРЕЛЬ! ... Луна . ... 154 155 [ 156 ] 157 158 .. ... Сообщений: 5 636 . Рейтинг: +133/-26 . Ответ #3100 : 08.09.2006 [13:03:18] ? ... Записан . ... Ответ #3101 : 08.09.2006 [13:06:44] ? ... Сообщений: 132 . ... Ответ #3102 : 08.09.2006 [14:05:28] ? ... Ответ #3103 : 08.09.2006 [14:31:11] ? ... Андрей Олешко http://oleshko.net.ru/ , http://astroexperiment.ru . ... Ответ #3104 : 08.09.2006 [14:40:41] ? ... Ответ #3105 : 08.09.2006 [15:09:24] ? ...

. William Herschel's 7-foot Newtonian reflector, from the collection of the Museum of the History of Science, Oxford, England, August 11, 2013.

... Model of ejection of matter from dense stellar cluster and chaotic motion of gravitating shells . The motion with intersections of relativistic gravitating shells in the Schwarzschild gravitational field of a central body is considered. ... Such special casesas the Newtonian approximation, intersections of light shells, and intersections of a test shell with a gravitating shell are also considered.The ejection of one of the shells to infinity in the relativistic region is described. ...

... Home Articles An Asymmetrical Mount For a 17.5? Newtonian . ... Beyond New York City . ... An Asymmetrical Mount For a 17.5" Newtonian . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... I live in New York City. ... The basic Dobsonian design uses a mirror box. ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

To Solve Dark Matter Problem Without Dark Matter Chongming Xu Lohrmann Observatory, Dresden, Germany In this paper, we point out the main character of dark matter: invisible and dissipationless (or fully transparent) to be the same as the one of the gravitational eld. There are several alternative gravitational theories to revise general relativity and Newtonian law to explain the rotation curve of the spiral galaxies without dark matter. ...

. Изображение рассеянного скопления М7 было получено астрономом- любителем Адриано Дефрэйтасом . (Adriano Defreitas). Это цветное изображение (CCD) М7 было получено Тимом Хантером ( Tim Hunter ) и Джеймсом Макагама (James McGaha) с помощью их телескопа ( 24-inch f/5 Newtonian telescope), а также с помощью оборудования Грессландской Обсерватории в Аризоне ( Apogee AP-7 CCD camera, Grasslands Observatory near Tucson, Arizona ).