... The engine operates with all three propellants (lox, kerosene, hydrogen) in the booster mode (mode 1) and transitions to bipropellant operation (lox, hydrogen) for the latter portion of the trajectory (mode 2). ... In mode 1 operation the hydrogen enhances the combustion of the kerosene to provide to tripropellant specific impulse levels higher than obtainable with separate combustion of the fuels. ... mode 1) . ... DASA, Munchen, February 1994, приведены следующие параметры двигателя РД-701 : . ...

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• Heracles

... My mother had a 'star named for me' with the International Star Registry (henceforth ISR) as a gift for this Christmas. ... On the back of the chart, a sticker described the precise location and visual magnitude of the star, taken from the Hubble Guide Star Catalog. The first thing I noticed, was the chart was Epoch 1950. ... The coordinates were also exactly those on the ISR sticker, so I now knew that even though the ISR chart was epoch 1950, the coordinates on the sticker were epoch 1983. ...

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• Amateur Telescope Makers of Boston

Общая Астрономическая Конференция > Форумы общей направленности > Любые вопросы от новичков > Шпионим за спутниками . ... Просмотр полной версии : Шпионим за спутниками . ... 08.07.2007, 22:56 . ... Зайдите на сайт www.stoff.pl (http://www.stoff.pl) Там можно на халяву скачать программу Orbitron (поддержывает множество языков). Потом заходим на сайт - www.celestrak.com/NORAD/elements/ (http://www.celestrak.com/NORAD/elements/) Оттуда берем текущие орбиты интересующих нас спутников - напр. ...

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• Общая Астрономическая Конференция - Показать сообщение отдельно -
• Общая Астрономическая Конференция - Показать сообщение отдельно - P/2015 R1
• Общая Астрономическая Конференция - Показать сообщение отдельно - P/2016 A3

JSC History . ... NASA History . ... Space Shuttle: 1981 to 2011 . NASA's Space Shuttle orbiters were the first spacecraft capable of routinely launching into orbit like rockets and then returning to Earth as gliders. ... http://www.nasa.gov/agency/crm/shuttle/index.html . ... http://www.jsc.nasa.gov/history/oral_histories/sts-r.htm . ... http://www.jsc.nasa.gov/history/shuttle_pk/pk/Flight_001_STS-001_Press_Kit.pdf . ... http://www.jsc.nasa.gov/history/shuttle_pk/shuttle_press.htm . ...

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• Astronaut Bio: Michael Lopez-Alegria (11/2014)
• Astronaut Bio: Peter J. K. Wisoff 11/2001
• Astronaut Bio: Stephen K. Robinson (07/2012)

... Exposure Time Calculator (ETC) . ... Microstep (pattern) - a pattern of exposures at positions each shifted by a very small movement (<3 arcsec) from the reference position. ... A microstep pattern can be contained within each position of a jitter pattern. Jitter (pattern) - a pattern of exposures at positions each shifted by a small movement (<30 arcsec) from the reference position. ... Making a tile: Ysteps ; . ... Resulting Exposure time map for a filled tile of 6 pawprints (no jittering). ...

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• VISTA - Images of Optics
• VISTA - Visible and Infrared Survey Telescope for Astronomy
• VISTA ETC - Exposure Time Calculator

. Please, enter light elements for your star and Julian Day interval. HJD0: . Period: . JD1: . JD2: .

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• VaST homepage

SITE 2010 Comprehensive Characterization of Astronomical Sites Kislovodsk, Russia, 49 October 2010 Conference Summary Marc S. Sarazin*a a European Southern Observatory, Garching, Germany Abstract The main topics discussed during the Site 2010 conference are outlined and the outcome is described. Keywords: Astronomical Site testing, precipitable water vapor, atmospheric turbulence, cloudiness, seeing 1. ... Site surveys for National observatory projects in China, India, and Iran benefit from this. ...

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• Methods and instruments to measure/monitor major site properties

... Fifteen years ago, on February 20, 1986 the launching of the Core Block marked the beginning of the Mir Orbital Station construction. Currently the Mir Station consists of 6 modules. ... The Mir Station total mass is near 130 tons. ... For sinking unburned Mir Station fragments after reentering atmosphere a Southern Pacific Ocean area limited by the following point coordinates: 53 њ S, 175 њ W; 23 њ S, 175 њ W; 23 њ S, 132 њ W; 30 њ S, 127 њ W; 30 њ S, 90 њ W; 53 њ S, 90 њ W is choosen. ...

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Neptune is the coldness kingdom. ... Mass . ... The period of rotation . ... The average distance from the Sun . ... Excentricity of the orbit . ... Neptune is the eighth from the Sun great planet. ... From all the elements in Neptune the main are hydrogen and helium in such ratio(approximately) as in the Sun in one helium atom falls 20 atoms of hydrogen. ... According to the theoretical data there is a cloak and a core in Neptune. The core mass may by 90% of the entire planet’s mass. ...

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• radioteleske

... Our Galaxy . ... Stars . ... Image credit: ESO, Acknowledgement: VST/Omegacam Local Group Survey) . First observed in 1909, the WLM galaxy is part of the Local Group, about 10 million light years (3.1 Mpc) across, this is the set of more than 35 galaxies which includes our own Milky Way. ... I compared this little galaxy to a living fossil because looking at it gives us an insight into a past era in the UniverseтАЩs history. ... Distances and metallicities for 17 Local Group galaxies? . ...

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• Ministry of Space: Warren Ellis? future that wasn?t | Astronotes
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... Next Routine] [List of Routines] NAME: ADD_HEADER PURPOSE: addition information from FITS-headers MPFS-frames DESCRIPTION: The function computes the total exposure, mean value zenit distance and modified FITS header CALLING SEQUENCE: Result =ADD_HEADER( headers ) CATEGORY: reduction MPFS-data INPUTS: Headers = String array FITS-headers from the MPFS data OUTPUTS: Header = String array containing the header from the FITS file. ... OPTIONAL INPUT KEYWORD PARAMETERS: BEFORE = Keyword string name. ...

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... The described algorithm is suitable for measurements of complex images of stars. ... a) the zero-based number of stars in the complex (multicentric) image, . b) set of preliminary coordinates - x i , y i , for all stars, index i is number of a star, . ... i - index of a star in the complex image; . ... These parameters are calculated by a nonlinear method of a least squares.The main output parameters of this algorithm are x i , y i ; where the index i is number of a star in the multicentric image. ...

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... GRIN lenses for telecommunication optics applications ? GTC (gradient telecom) lenses. ... GTC lenses are used in different fiber-optic devices: collimators, couplers, isolators and WDM etc . ... 2.Diameter . GTC lenses diameters are 1.0 mm, 1.8 mm, 3.0 mm and 4.0mm. ... 1.0 mm -3.0 mm diam GTC lenses are supplied in 0.22P, 0.23P, 0.25P, 0.27P and 0.29P length. 4.0 mm diam GTC lenses are supplied in 0.11P length. ... GTC . ... 3 scratches with 5mkm max width and 200mkm max length are allowed . ...

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... Polish scientists at the Space Research Centre, Polish Academy of Sciences, in Wroclaw, south-west Poland, have constructed an instrument called SphinX (short for Solar PHotometer In X-rays), which is an X-ray spectrophotometer, that will obtain spectra in the energy range 0.5--15 keV in 256 energy channels with frequency of up to 100 times a second. ... SphinX is part of a package of instruments known as TESIS (PI Prof. Sergei Kuzin, Lebedev Institute, Moscow). ... Space Research Centre, . ...

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... astro-ph . ... Statistical Characterization of the Chandra Source Catalog . ... The first release of the Chandra Source Catalog (CSC) contains ~95,000 X-ray sources in a total area of ~0.75% of the entire sky, using data from ~3,900 separate ACIS observations of a multitude of different types of X-ray sources. ... In addition to these traditional catalog elements, for each X-ray source the CSC includes an extensive set of file-based data products that can be manipulated interactively. ...

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• SAI Web Services - WCSfix
• WCSFix - Web Interface

T Ant [A/H] = -0.0. P var, nonlinear elements: Max = 2436120.756 T Ant + 5.897915d*E + 4.80d*10^{-8}E^2 [00027]. ... 00000]. ... Brightness variations with AG Ant the orbital period probably due to variations of circumstellar AG Ant extinction. ... R Ara Min II 6.2. ... The data in [00002] reveal RR Tel current V-band variations with a small amplitude and nearly RR Tel the same period [00000]. ... V0340 Tel The data from [00002] do not confirm the tabulated period V0340 Tel [00000]. ...

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• http://www.sai.msu.su/gcvs/doc/AR1013e.pdf
• Презентация PowerPoint
• General Catalogue of Variable Stars: Homepage.

MPEC 2010-A35 : 2010 AL2 http://www.cfa.harvard.edu/mpec/K10/K10A35.html Printer-friendly version MPC Ope rations Status Processing (Info) ECS: Accessible Obse rv e r Se rv ice s (NEOs) NEO Services Overview NEO Confirmation NEO Confirmation (RA order) NEO Ratings NEO Page NEO Observation Planning Aid NEOChecker NEOCMT Checker Obse rv e r Se rv ice s Services Overview IAUMail Minor Planet & Comet Ephem. ... Orbital elements: 2010 AL2 Epoch 2010 Jan. ...

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• http://www.winer.org/Downloads/MPEC2010-A36.pdf
• http://www.winer.org/Downloads/MPEC2010-A37.pdf
• http://www.winer.org/Downloads/MPEC2010-A38.pdf

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . Radio telescope 's beam General information Main characteristics of the Radio telescope Observing programs General view of the antenna array Main research areas Principle of generation of radio images Receiving systems Main characteristics of the base receiving-recording complex Calibrations Data archive and databases Publication SSRT - Radio telescope's beam . ...

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A methodical and didactical complex "Sign Language" . ... ABSTRACT The process of communication of the deaf includes the wide use of the sign language. ... The aim of this work is to develop a tool that should facilitate process of sign language teaching and also give to the trainee a means for independent study of various normative variants of sign language - for example, Russian, English, International and so on. ... The process of dialogue of the deaf people includes wide use of sign languages. ...

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... GALAXY: A galaxy is made up of billions or trillions of stars bound together by their own gravity. ... HELIUM (He): The second element in the periodic table, has 2 protons, 2 neutrons, and is a noble gas. ... Helium melts at -272.2 degrees Celsius, and boils at -268.934 degrees Celsius. ... HYDROGEN (H): The first element on the periodic table, is a gas, and has an atomic mass of 1.00794 amu. ... Hydrogen melts at -259.34 degrees Celsius, and freezes at -252.87 degrees Celsius. ...

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• Astronomical Glossary - N thru R
• magnify