... Each ferrule will be used to plug approximately 300 holes. We must be sure the ferrules will not wear excessively during use; 1 mil reduction in diameter of a ferrule is enough to reduce light throughput by approximately 1%. ... Stainless steel ferrules offer lower precision (which will lose us approximately 1/2 to 1% light compared to ceramic), but they are relatively inexpensive, readily available with the hole diameter we require, and immune to cracking. ... Hence the wear was not very deep. ...

. Home . Structure of Data . Description . Catalog . Publications . VO . ЮБ 2000 . 22:29:49.2 . ЮД 2000 . +55:23:47 . l . 103.710 . b . -2.100 . diameter . 3.0' . (m - M) 0 . 12.51 0.28 . distance . 3180 440 pc . E(B - V) . 0.54 0.03 . log(t) . 7.6 0.05 . SAO 1-m, BVRI observations (1235 measurements) VOTable . 2MASS data VOTable . IPHAS IDR data VOTable . Developed by the Team . Send us your questions or feedback

Astronomy Discussion Forums . ... Teleportation . ... If the Sun lost half its mass; = includes basic concept apparently Sun losing "half its uncertainty", = Sun becoming more factorised (concentrated) .. ... If the sun lost half its mass, on this idea it would partially let go of gravity (well conventional physics says this too?) ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... О проекте . ... Библиотека . ... Future imperfect (1) . ... Кувыркающиеся в Космосе роботы и ползающие по поверхности чужих, мертвых, миров мертвые же автоматические тележки - почти не в счет. ... Будущее, которое нам обещала НФ, Будущее, которым нас манили и пугали, то Будущее, которое стало для нас уже как бы привычным и почти обжитым, не состоялось. ... Вся несбывшаяся и в обозримом будущем - несбыточная эпопея освоения Космоса была "списана" с эры Великих географических открытий. ...

... Planets . ... Stars . ... Barnard found both the fifth Jovian satellite to be discovered, known today as Amalthea, and a vast faint ring of nebulosity in Orion, known as BarnardтАЩs Loop. ... In the 1960s astronomer Peter van de Kamp announced the discovery of two planets in orbit about BarnardтАЩs Star! ... Then another researcher used the same plates as van de Kamp to study another tiny M class red dwarf in Draco called Gliese 793 and found that it and BarnardтАЩs Star appeared to wobble in synch....

Глава 5. ... Изменение массы и размеров небесных тел . Все небесные тела Солнечной системы от Солнца до метеорных тел постепенно увеличивают свою массу посредством вычерпывания диффузной материи, ее аккреции на поверхность небесных тел и падений на небесные тела Солнечной системы других, более мелких небесных тел, как принадлежавших ранее ей, так и не принадлежавших. ... Растет плотность и по мере приближения небесных тел к Солнцу, да и к другим центральным телам. ... Вращение небесных тел. ...

... НОВОСТИ CASTROL ! ... РАСПРОДАЖА Авто-Холодильников Koolatron ! ... Холодильники KOOLATRON отличает: . ... Дополнительный вентилятор внутри камеры обеспечивает равномерное распределение температуры . ... Koolatron P20 . Koolatron P25 . Koolatron P65 . Koolatron W75 . Koolatron P85 . ... охлаждение, обогрев . охлаждение . ... Мощность в режиме охлаждения, Вт . ... 12В . ... встроенный вентилятор, съемная крышка, откидная переносная ручка . ... горизонтальное . ... 2006 AD REM SRL . ...

... Bad Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... How did early astronomers determine the distance form earth to the sun, and what method is used today to determine distances in space? ... Since Huygens knew the Sun-Venus-Earth angle (from the phases), and he could directly measure the Sun-Earth-Venus angle (simply by measuring Venus' apparent distance from the Sun on the sky) all he needed was to know the distance from Earth to Venus. ...

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... The APOLLO Lunar Ranging Project . Professor Tom Murphy . Thursday, Nov 11, 2010 at 8:00 PM . ... Professor Tom Murphy grew up in Chattanooga, TN, where he was an active amateur astronomer and telescope builder. ... In 2003, Murphy moved to the University of California, San Diego where he is an associate professor and continues to run the APOLLO project. ... Nov . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

Welcome to K -corrections calculator, simple service allowing one to determine K -corrections of a galaxy, given its redshift and one or more colours. ... K -correction in choose filter.. ... Redshift . Colour choose colour.. Colour value . Calculator . ... calculate spectral energy distributions , K-corrections calculator , GALEX FUV NUV , UKIDSS YJHK , K-corrections of galaxies , spectral based k-corrections , SDSS filter set K-corrections , K correction code IDL , kcorrect IDL C , . ...

... Observing . ... Home Education Workshops at Adorama Astronomy Workshop: Observing Variable Stars from the City ? February 15, 2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Presented by€а Adorama €аFor the Amateur Astronomers Association of New York . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

The Archeops experiment aimed at measuring the cosmic background emitted just after the Big Bang. The study of this radiation is essential to obtain precise information on the evolution of the Universe: density, Hubble constant, age of the Universe.. To achieve this goal, measurements have been done with devices cooled down at 100mK temperature placed at the focus of a warm telescope. ... 28960 visitors . ...