Instruments and Methods 133 Sky temperature resolution by microwave radiometry A.G. Kislyakov State University, Nizhny Novgorod, Russia Introduction The threshold sensitivity of a radiometer is determined by well known equation Karlov & Manenkov, 1966 " hE i = h hn i +1 hn i + N t G0 , 1 G0 1=2 : 1 Here we denote hE ias the minimum detectable increment of radiation spectral density E at a frequency . ... Equation 3 gives a correction to the expression for limit detector sensitivity Kislyakov, 1997. ...

... This year SSAU provides 1429 state-funded places for admission in all kinds and directions of educational programs. ... In addition, SSAU Admission Committee notes the substantial increase in interest from the foreign applicants this year. The number of applications from foreign countries has already surpassed last year's totals - 76 applications. Based on the experience of admission campaigns of previous years, SSAU expects summer 2014 to enrol about 150 foreign students in the university. ...

Добро пожаловать, Гость . ... В теме В разделе По форуму . Общероссийская неделя "Астрономия на тротуаре" - 15-17 апреля . ... Телескопостроение, оптика (Модераторы: I.A.R. , Ivan7enych ) ? Dawes Limit . ... 0 Пользователей и 1 Гость просматривают эту тему. Гость . ... В инструкциях к импортным телескопам встречается следующий параметр углового разрешания - Dawes Limit. ... Записан . ... 4.8"/Д при яркости компонентов около 5.7 и 6.4; . ... 16.5"Д при Яркости компонентов около 6.2 и 9.5; . ...

... Tonight's Sky . ... Observing . ... Bob Berman . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Dave's Universe . ... Bob Berman's Strange Universe . Bob Berman's strange universe: Expect a surprise . ... Get instant access to subscriber content on Astronomy.com! ... If you are already registered on Astronomy.com, please log in below. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

The direct detection of gravitational waves is one of those events long-expected by physicists that are nevertheless a significant occurrence which excites the world scientific community as if something unexpected has happened. ... Many rumors leaked ahead of the conference, and the fact that something (that is, a signal corresponding to gravitational waves) was discovered by LIGO (Laser Interferometer Gravitational-Wave Observatory) was discussed on the sidelines. ... arXiv:1602.03868 . ...

The Geodetic Reference Antenna in Space ( GRASP ): A Mission to Enhance the Terrestrial Reference Frame Yoaz Bar-Sever1, R. Steven Nerem2, and the GRASP Team 2 Jet Propulsion Laboratory University of Colorado, Boulder 1 Terrestrial Reference Frame ( TRF ) and GRASP · TRF is fundamental to all areas of geophysics TRF · TRF are currently determined by 4 space-ground geodetic techniques: - GPS/ GNSS - ... YEB, September 2012 10 ...

... Info . Since 1995, Conference on Cryocrystals and Quantum Crystals (CC) has been the important international forum for presenting new results on physics and chemistry of atomic and molecular solids such as rare gas solids, hydrogens, nitrogen, oxygen, methanes, helium isotopes, water ice, etc.. ... We encourage submissions of papers to CC-2010 that report on advances in these core areas, as well as those peripherial to them. ... A few Public Lectures are planned to be presented at the CC-2010. ...

If you can see this, it means that the installation of the Russian Apache web server software on this system was successful. ... This page is here because the site administrator has changed the configuration of this web server. ... The Apache Software Foundation, which wrote the web server software this site administrator is using, has nothing to do with maintaining this site and cannot help resolve configuration issues. ... You are free to use the image below on an Apache-powered web server. ...

This page is devoted to information on Supernova 1999dq in NGC 976 Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main supernova page. Information on the original web pages for many of these images can be found on the Supernova links web page. Supernova 1999dq is the 24th LOSS discovery this year. ... VSNET Light curve (requires JAVA). ... vsnet-alert 3442 ] SNe 1999dp and 1999dq . vsnet-chat 2285 ] Host galaxy of SN1999dq . ...

... Magnetic storms online . ... Geomagnetic activity forecast . ... September : 2015 . ... No magnetic storm is expected . From 10 September 2015 to 6 October 2015 the following magnetic storms and disturbances are expected: . October 05, 2015 geomagnetic disturbances . September 12, 2015 geomagnetic disturbances . ... September 21, 2015 geomagnetic storm of level G1 (minor) . ... September 20, 2015 geomagnetic disturbances 10 September 2015 - 6 October 2015 . 09.09.2015 . ...

... Heracles Triplane and Aerospace Systems . The key characteristics of two-stage aerospace systems are determined according to speed and carrying capacity of the aircraft-carrier used . ... So the SPIRAL system hypersonic carrier was expected to launch the second stage by weight 63 tons at a speed corresponding to 6M; whereas launching weight of the MAKS system orbital stage with the use of the An-225 MRIYA heavy subsonic aircraft reaches 275 tons, and the HERACLES aircraft - 450 tons. ...

. Diameter of circular antenna . 576 m . Number of antenna elements . 895 . Size of an element . 11.4 x 2 m . Geometrical area . 15000 m 2 . Effective area of full circle . 3500 m 2 . Wavelength range . 1 - 50 cm . Frequency range . 610 - 30000 MHz . Maximum angular resolution . 2 arcsec . Accuracy of coordinate determination . 1-10 arcsec . Flux density limit . 0.500 mJy . Absolute brightness temperature limit . 0.050 mK . Tracking time (South sector + Flat mirror) . 1-3 h . [RATAN-600 Homepage]

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 01 - 07.06.2015, Forecast on 08 - 15.06.2015, Carrington Rotation 2164 (21,44.05.2015) SUNSPOT-FORMING ACTIVITY OF THE SUN WAS AT THE AVERAGE AND LOW LEVEL. ... NEXT WEEK THE AVERAGE AND HIGH LEVELS OF SUNSPOT-FORMING OF ACTIVITY, IS EXPECTED. ... FLARE ACTIVITY WAS AT THE LOW LEVEL ALL DAYS BESIDES JUNE, 1 -THE VERY LOW. ... IN THE RE- MAINING DAYS OF THE GEOMAGNETIC SITUATION EXPECTED UNSETTLED AND QUITE. ...

. This is a new popup window - close it when you are done . Submitted by Bruce Berger on 03/14/2007 11:14:36 . Scopes for Sale at the Beijing Planetarium . I was surprised that the prices were close to what you'd spend online at Orion Telescopes. I expected them to be much less. But hey, this WAS a museum so I shouldn't have expected any bargains. Logon to post a follow-up comment or review comments from others . Copyright (c) Amateur Telescope Makers of Boston, Inc. About Us Contact Us

... ISC Kosmotras . ... Comments, Opinions Publications Dnepr Program . Dnepr launch record 17 August 2011. ... The success of PICARD launch re enforces our high level of appreciation of the quality of the DNEPR launcher and of the professionalism and efficiency of ISC Kosmotras. ... The distinguishing feature of the THEOS launch by a converted SS-18 ICBM (Dnepr LV) is that it was the first ISC Kosmotras mission from the Yasny launch site that headed southward to its Sun-synchronous target orbit. ...

Microsymposium 34, MS058, 2001 ANOMALIES OF THE MOON'S THERMAL EMISSION IN THE IR SPECTRAL RANGE (10.5 - 12.5 micron). ... Sternberg State Astronomical Institute, Moscow, 119899, Russia, pugach@sai.msu.ru Summary: New satellite measurements of the lunar-surface radiation temperature were used to construct the spatial angular function of thermal radiation of the Moon in the infrared (10.5-12.5 micron) spectral range. ... These thermal anomalies are observed only in the limited range of phase angles. ...

Twilight observations with MASS/DIMM B. Safonov Sternberg Astronomical Institute Moscow State University Comprehensive Characterization of Astronomical Sites, 2010 B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 1 / 17 Why observe in twilight with MASS/DIMM? ... ASM includes 3 devices sensitive to background: guider, DIMM and MASS. B. Safonov (Moscow State University) Twilight observations with MASS/DIMM SITE 2010 2 / 17 Background in guider. ...

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The Russian Parliament will soon consider a bill that would restructure the Russian space program, 35 years after the launch оf Sputnik. ... But the legislation's most striking and controversial feature is a provision that would ban testing and deployment оf space weapons ? including anti-satellite weapons and space-based missile interceptors. ... A draft bill was written by a group of experts within the Moscow Space Club, several of whom now work on space issues with the Russian Parliament. ...

... Be s k i n , 1, 3 S. Karpov,1 S. Bondar,2 A. Perkov,2 E. Ivanov,2 E. Katkova,2 V. Sasyuk,3 A.Biryukov4 and A.Shearer5 RESUMEN Favor de prop orcionar un resumen en espanol. ... Here we give a status report on the next generation, multiob jective and transforming monitoring system, MiniMegaTORTORA, with two variants (MMT-6 based on image intensifiers with fast CCDs and MMT-9 equipped with Andor Neo sCMOSes) now under construction and commissioning at SAO RAS. ...