The National Astronomy and Ionosphere Center and Motorola Inc., which operates the IRIDIUM satellite system, have signed a Coordination Agreement. ... The Agreement guarantees that : . a) during scheduled observations in this band, between 10 pm and 6 am Miami local time, IRIDIUM's out-of-band emission will be below -238 dB W per meter sq. per Hz. level for all seven days of the week, . ... The complete document can be viewed here: ( NAIC-IRIDIUM Coordination Agreement ) . ...

Еще в разделе: (Показать все результаты (>2498) - www.naic.edu/ )

• Alfa_ang - IDL procedure for calculating the optimum rotation angle for ALFA
• Coordination with GPS L3
• Rotang - IDL procedure for calculating the optimum rotation angle for ALFA

... Astrometric Observations of the Second, Third, and Fourth Satellites of Uranus I. S. Izmailova, S. A. Korotkiib, M. V. Ereshkob, and A. V. Stepurab a Pulkovo Observatory of the Russian Academy of Sciences, Pulkovskoe shosse 65­1, St. Petersburg, 196140 Russia b Ka-Dar Observatory, 1-i Neopalimovskii per., ... ASTROMETRIC OBSERVATIONS 43 To determine the center coordinates and other parameters of a satellite or a star image, we solved a redundant system with the nonlinear least-squares method. ...

Еще в разделе: (Показать все результаты (>108) - www.puldb.ru/ )

• Pulkovo Databases
• Pulkovo Database of Observations of Planets and Their Satellites

The purpose of the space-physics lab exercises is to introduce the students to the methods of the measurements, to the modern conception of near-Earth space structure and the physical processes and phenomena occured in it. ... At present the reasearches and the teachers of the University and of other institutes participating in the project continue development of the the special space-physics lab exercises, and they are interested in your ideas concerning the future exercises. ...

Еще в разделе: (Показать все результаты (>6730) - cosmos.msu.ru/ )

• University Satellites and Space Science Education '2006

The aim of this section of the course is to familiarise you with celestial Coordinates. ... I found some good notes explaining the celestial coordinate system on the web: . ... 1st Dec: 04hr, 00min In addition to the equatorial coordinates described in the notes above, astronomers also use (at least) two other coordinate systes: galactic coordinates and ecliptic coordinates. ... Ecliptic coordinates use the ecliptic (the Earth's path around the sun) as the equator, and are used for solar system work. ...

Еще в разделе: (Показать все результаты (>444) - www.mso.anu.edu.au/ )

• Free-Free Gaunt Factors
• Observational Techniques Home Page
• Pink Black Holes: Frequently Asked Questions

... Chapter 4: Solar System Targets > 4.4 Observing Windows [Windows] . ... 4.4.1 Default Target Windows . ... In general, ?windows? which define when the target is visible to HST need not be explicitly identified, since these windows will be calculated by the STScI. ... If the target is a surface feature on a body, the times when the feature is within the field of view of the HST (i.e. the feature is on that part of the body ?facing? ... radial velocity of one body relative to another in km/sec . ...

Еще в разделе: (Показать все результаты (>10043) - www.stsci.edu/ )

• Approach for Calculating an Analytical PSF
• Getting Coordinates Coordinated
• CSPICE Routines: TIPBOD_C

... The experience of determination of the link between radio sources and dynamical reference frames is presented. To obtain this connection we used a series of very long baseline interferometry (VLBI) observations of the spacecraft Phobos-2 and angularly nearby quasars. ... The dynamical reference frame is determined by equator and equinox of these ephemerides. ... References . ... The relative orientation of the radio and dynamical reference frames can be described by a sequence of three rotations . ...

Еще в разделе: (Показать все результаты (>979) - www.mrao.cam.ac.uk/ )

• A Calculation of derivatives
• Abstract
• Bojan Nikolic -- Calculating dispersive path delay due to the atmosphere

Free Space Optical Communication Systems . ... Airplane - geostationary satellite laser communication. ... Air ( space) optical communication systems ( AO ) . ... The Optical ground station was constructed at Teide observatory, Tenerife, Canary Islands for laser communication experiments from ground to geostationary (GEO) satellites. ... Laser communication experiments between ARTEMIS satellite and optical ground station (OGS) ESA at Canary Islands are performing also. ... CW laser test experiments . ...

Еще в разделе: (Показать все результаты (>279) - www.mao.kiev.ua/ )

• Activity - Page 2
• Aspherical optics
• Dept. for Astrometry & Space Geodynamics

... Now we present the topographical map for the COOC criterion calculated for both galactic X-ray sources taken from Table  4 and binary pulsar species from Table  6 in coordinates the initial mass ratio exponent - mean kick velocity (Figure  26 ). ... Figure 26: The COOC criterion for X-ray galactic sources and binary radiopulsars versus the initial mass ratio exponent and mean space kick velocity for different kick velocity distributions. ...

Еще в разделе: (Показать все результаты (>460) - xray.sai.msu.ru/ )

• Calculation of binary NS coalescence rates
• Calculation of Binary Neutron Star Coalescence Rates
• Results of calculations

... The Network Time Protocol (NTP) is used to synchronize the time of a computer client or server to another server or reference time source, such as a radio or satellite receiver or modem. ... Information on the NTP architecture, protocol and algorithms can be found in the Further Information and Bibliography page. The Building and Installing the Distribution page presents an overview of the procedures for compiling the distribution and installing it on a typical client or server. ...

Еще в разделе: (Показать все результаты (>1377) - www.sai.msu.su/ )

• Further Information and Bibliography
• APOD: 2009 February 18 - Satellites Collide in Low Earth Orbit
• Zen: SkyPixelization

. Dedicated to 40th anniversary of the . first artificial Earth satellite launch . Russian (Win) .

Еще в разделе: (Показать все результаты (>41) - sputnik.infospace.ru/ )

• Archive of Russian satellites (CPI RSA) Краткая инструкция работы с каталогом

home education > activities . SEARCH ASP SITE: Match ALL words Match ANY word . ... Astronomy . ... This classic activity by Dennis Schatz asks students to invent a more-or-less plausible life form that could survive on one of the moons and planets in our solar system. [a] . ... Good as far as it goes, but fails to point out a crucial difference with the real world: on the planets, the impacting bodies explode making craters much bigger and rounder than the ones the students will obtain. [m,h] . ...

Еще в разделе: (Показать все результаты (>565) - www.astrosociety.org/ )

• ASP: Up, Up, and Away
• ASP: A Taste of Real Astronomy ? The ESA/ESO Astronomy Exercises

... Peter J.K. "Jeff" Wisoff (Ph.D) . NASA Astronaut (former) . ... A veteran of four space flights, STS-57 in 1993, STS-68 in 1994, STS-81 in 1997 and STS-92 in 2000, Dr. Wisoff has logged a total of 42 days, 56 hours, 1 minute and 48 seconds in space, including , 19 hours and 53 minutes of EVA time in three space walks. ... Following 183 orbits of the Earth in 269 hours and 46 minutes, the eleven-day mission ended with Space Shuttle Endeavour landing at Edwards Air Force Base, California. ...

Еще в разделе: (Показать все результаты (>1738) - www.jsc.nasa.gov/ )

Системные исследования и разработка спутниковых систем ДЗЗ; . Разработка и создание бортовых радиометрических средств в СВЧ-диапазоне; . Разработка методов дистанционной диагностики процессов в системе океан-атмосфера с помощью спутниковых средств СВЧ-радиометрии (синоптические океанические вихри, фронтальные зоны, течения, волны Россби, тайфуны и ураганы, явление Эль-Ниньо). ... Директор . ... 1-ый заместитель директора . ... 2014 НТЦ "КОСМОНИТ" ОАО "Российские космические системы" . ...

Еще в разделе: (Показать все результаты (>3) - resurs.cpi.space.ru/ )

... Pre-university education . ... Samara region . ... University at a glance . ... A group of young scientists of Samara University under the guidance of the candidate of chemical sciences Yevgeniy Aleksandrov began to make the most extensive database in the world for the structure and physical properties of crystalline coordination polymers. ... The idea of making a database for coordination polymers already exists in the scientific community of the world. ... SAMARA STATE AEROSPACE UNIVERSITY . ...

Еще в разделе: (Показать все результаты (>516) - www.ssau.ru/ )

• Young SSAU scientists will guide the orbital constellation of the satellites
• Semkin Nikolay Danilovich

UNIVERSAL COORDINATES TRANSFORMER . EPOCH1: . EQUATORIAL COORDINATES FOR EPOCH1 . ... rad . ... EPOCH2: . EQUATORIAL COORDINATES FOR EPOCH2: . ... ECLIPTIC COORDINATES FOR EPOCH1 . ... ECLIPTIC COORDINATES FOR EPOCH2 . ... GALACTIC COORDINATES . ... Type initial epoch (epoch1), final epoch (epoch2) and needed coodinates (equatorial a 1 , d 1 for epoch1, ecliptic l 1 , b 1 for epoch1 or galactic l,b) and press corresponding "SUBMIT" (if EPOCH2=EPOCH1, EPOCH2=EPOCH1+10). ...

Еще в разделе: (Показать все результаты (>198) - hea.iki.rssi.ru/ )

• General astronomical tools

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... The algorithm and appropriate program for decametric radiosignal propagation conditions prediction for paths from 500 to 9000 km have been developed at ISTP SB on the basis of normal wave method (AltyntsevaB.I,Iliyin N.V., Kurkin V.I. and others //Decameters channel simulation on the base of normal wave method . ... Solar activity indices are chosen automatically from the prediction date from the database . ...

Еще в разделе: (Показать все результаты (>18) - rp.iszf.irk.ru/ )

• East Siberian Center for the Earth's Ionosphere Research. Maximum usable

To appear in "Fourth Workshop on Robotic Autonomous Observatories (2015)"RevMexAA(SC) MASSIVE PHOTOMETRY OF LOW-ALTITUDE ARTIFICIAL SATELLITES ON MINI-MEGATORTORA S. Karpov, 1, 3 E. Katkova,2 G. Beskin, 1, 3 A. Biryukov3,4 S. Bondar,2 E. Davydov5 E. Ivanov,2 A. Perkov,2 V. Sasyuk3 RESUMEN Favor de prop orcionar un resumen en espanol. ... The nine-channel Mini-MegaTORTORA (MMT-9) optical widefield monitoring system with high temporal resolution system is in operation since June 2014. ...

Еще в разделе: (Показать все результаты (>1561) - vo.astronet.ru/ )

The T-matrix or transition matrix is well known in the quantum theory of scattering [ 56 ] where one also uses the Heisenberg S-matrix connected with the T-matrix by the relation . In contrast to the coordinate representation in the integral equation method, where the scattered and incident fields are connected by the Green function, the T-matrix connects the coefficients of the expansions of the scattered and incident fields in terms of a complete system of the vector basis functions. ...

Еще в разделе: (Показать все результаты (>286) - www.astro.spbu.ru/ )

• Model realization and some results
• Point matching method
• AI SPbU library of scattering codes

... StarCalc Home Page - Downloads . ... File . StarCalc (English version) . ... With minimal configuration, version 5.72 of StarCalc includes the next interfaces: "Horizon", "Horizontal coordinategrid", "Equatorial coordinate grid", "Constellation boundaries", "Constellation lines", "Constellation names", "Star proper names", "Bright Star Catalog", "Deep-sky objects", "Sun", "Moon" and "Planets and satellites" . Plugins for StarCalc . ... Interface to NGC 2000 (plugin + catalog file) . ...

Еще в разделе: (Показать все результаты (>3) - www.m31.spb.ru/ )

Prognoz-7 satellites magnetometer observation database . The Prognoz-7 satellite was launched 30 October 1978 into orbit with perigee 500 and apogee 203000 km, orbital period was 98 hours. Magnetic field measurements were conducted by SG-70 magnetometer with working range +/- 60 nT., accuracy about 0.3 nT. and sampling rate 1 measurement per 10.24 sec. Magnetic measurements and satellite position data in GSE coordinate system are presented in separate ASCII files. ...

Еще в разделе: (Показать все результаты (>520) - www.izmiran.rssi.ru/ )

• History
• IZMIRAN - Laboratory for ionosphere discontinuity investigation: The
• IZMIRAN - Laboratory for Ionospheric satellite investigations