The Hubble orbiting telescope. The Earth's atmosphere, while transparent to visible light, absorbs most "electromagnetic radiations" which belong to the same family as light: parts of the infra-red (IR) and all of the ultra-violet (UV), X-rays and gamma rays. ... The Hubble telescope , in low Earth orbit, overcomes such limitations, in the visible range and in part of the UV. ... Some satellites specialize in observing the Sun, such as the Japanese Yohkoh and NASA's SOHO . ...

... 9a. Earth orbits Sun? . ... 10a. Scale of Solar Sys. ... If the mean distance of Earth from the Sun is 1 AU ("Astronomical Unit"), then that of Venus is 0.723 AU, of Mercury 0.387 AU and that of Mars is 1.524 AU. ... By noting (1) where on the Sun's disk is the crossing seen, (2) timing its duration at two far-apart points on Earth, and (3) comparing the times, one can calculate the distance to Venus and from it the scale of the solar system. ... One occurred in 1639--too early. ...

. Album : asv-album :: Travels to distant places and countries :: 1998/03 Tashkent (Uzbekistan) . Up . << Prev . Nobody seem to observe anything on that telescope. Next >> . Photo album generated by photo album generator a Marginal Hack written by Dave on Tue Jun 23 14:46:31 2015 .

... Большинству любителей недоступны крупные телескопы типа как Алькор и Мицар,и они останавливают свой выбор на таких недорогих компактных и моблильных инструметнах как зрительные трубы и монокуляры. Самые распространенные среди них - ЗРТ-457 и МП 20х60. За три года работы с этими инструментами я выявил не мало их скрытых достоинств, впрочем как и недостатков и хочу ниже в кратце рассказать о них. ... Поговорим об оптических достоинствах трубы. Они несколько хуже, чем у монокуляра. ...

... Bad Astronomy . ... Radio . ... Bitesize Astronomy . ... Think of a telescope as a bucket that collects light. ... So over the years, telescope makers have focused on making telescopes bigger and bigger. ... For radio telescopes, however, the size limit is much bigger. Many astronomical objects emit radio waves, and as it happens telescopes built to detect radio don't have the same stringent smoothness criteria optical telescopes do. ... But radio telescopes can get even bigger. ...

... APT Activities and Science Results 3. ... APT Secretary Philip Edwards (ISAS) reviewed the aims of the APT (http://www.vsop.isas.ac.jp/apt/DefinitionAndAims.html). ... The Australia Telescope Compact Array, and Ceduna, Hartebeesthoek, Kashima, Mopra, Parkes, and Shanghai telescopes of the Asia-Pacific Telescope participated in these observations. ... In the absence of Tetsuo Sasao, Philip Edwards briefly described results of the APT 22 GHz observations conducted from October 1st to 5th, 1997. ...

... 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 . ...

... They are concerned with Attitude Control System of the spacecraft, satellite visibility from tracking stations, limits on the satellite autonomous operations during the orbit, and needs for auxiliary operations with the spacecraft. ... Among the operational constraints the most important one is the number of programmed slews per orbit, which determines the maximum number of radio sources to be observed during one orbit. ... System temperature (K) . ... Progress of the RadioAstron Project in Pictures...

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JournИes SystХmes de RИfИrence Spatio-Temporels , St Petersburg, Russia, 22-24 Septembre 2014 Optical monitoring of QSO in the framework of the Gaia space mission F. Taris (1), G. Damljanovic (2), A. Andrei (3), A. Klotz (4) , F. Vachier (5) (1) Observatoire de Paris - SyRTE, France , (2) Astronomical observatory of Belgrad, Serbia, (3) Observatorio Nacional MCT, Brasil, (4) UniversitИ de Toulouse, France (5) Observatoire de Paris ­ IMCCE, ...

... MASTER Net is 56 square degrees per 1 exposition . ... 06 Dec 2015: GRB 151205B: MASTER-NET early optical observations GCN18665 . ... 18 Nov 2015: GRB 151118A: MASTER-NET optical observations GCN18613 . ... 12 Nov 2015: GRB 151112A: MASTER-NET optical limit GCN18591 . ... 07 Nov 2015: GRB 151107A: MASTER-NET optical observations GCN18565 . ... 31 Oct 2015: Five OTs detected by Global Robotic MASTER Net ATel8232 . ... 02 Oct 2015: GRB 151001B: MASTER-NET early optical observations GCN18380 . ...

National Aeronautics and Space Administration In one of the most detailed astronomical images ever In one of the most detailed astronomical images ever produced, NASA''s Hubble Space Telescope captured an produced, NASA s Hubble Space Telescope captured an unprecedented look at the Orion Nebula. ... Aircraft Operations helps shuttles get off the ground by Kendra Phipps NASA/Markowitz JSC2004E47014 M ost people get their weather reports by turning on the local news, or by searching a weather Web site. ...