... 29a. Satellite looking up . ... 29e. Explorers of distant space . Space Index . This groups includes about 200 communication satellites ("comsats") scattered in synchronous orbits above the Earth's equator. ... 6 Earth radii (42,000 km or 26,000 miles), these satellite make one orbit per day, ( sidereal day of 23 h 56 min--see here ) and therefore as the Earth turns, they always stay above the same ground station. ... Next Satellite Class: #29e Missions to Planets and to Distant Space . ...

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• Spacecraft that Explore Distant Space

This groups includes about 200 communication satellites ("comsats") scattered in synchronous orbits above the Earth's equator. ... 6 Earth radii (42,000 km or 26,000 miles), these satellite make one orbit per day, and therefore as the Earth turns, they always stay above the same ground station. ... Still another application is the 24-satellite network of the "Global Positioning System" (GPS), in circular orbits at distances of about 4.1 Earth radii (26,000 km or 16,000 miles). ...

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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 following articles and reports, which are available online . Mills, D.L. Internet time synchronization: the Network Time Protocol. ... Mills, D.L. Network Time Protocol (Version 3) specification, implementation and analysis. ...

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• The Network Time Protocol (NTP) Distribution
• GALILEO READY FOR CLOSE FLYBY OF JUPITER'S BIGGEST MOON

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... 2/3-m Telescope . ... Site . ... Commanding . ... In a typical robotic observing scenario, each afternoon, a telescope control computer obtains a set of objects to observe from its home institution from a command or script file. ... The file is then transferred to the telescope control computer at the Winer Observatory in Sonoita. ... The Iowa control computer then begins processing the telrun.sls file. ... 2013 Winer Observatory. ...

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• Winer Observatory Benefactors

... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . ... A Search for Distant Satellites of Neptune . ... Previous surveys for distant satellites of Neptune have had relatively bright magnitude limits ( ) and would have missed satellites with magnitudes and colours similar to the 2 recently discovered Uranian satellites ( and ). ... This search is up to magnitudes deeper than the previous wide field search for distant satellites by the UK Schmidt Telescope....

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• Archive of VLBI Observations Majordomo List
• Second: Create a session on the correlator control computer lbaccc
• ATCA_report

... the shutters, loads . ... We have shutter/receiver protection to protect the receivers when we transmit with one of our transmitters (sband,430, hf). ... this is also controlled by the 430 ch load/antenna switch. closed always wins . ... shutter - open,close, or query the receiver/radar shutters . ... When the 430 dome is being used, we want to close all shutters, but leave the 430 dome receiver under control of the ch load/antenna switch (above the oscilloscopes in receiver room). ... shutter close...

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• novatel gps antenna and receiver
• byu phased array feed.
• Arecibo Observatory: S-High Receiver

BUS MODULE . The bus module together with the unified propulsion module meets all the payload requirements, is of multi-purpose design and provides ample functional redundancy . On-board systems include all the systems needed to support the operation and monitoring of the payload equipment and the spacecraft as a whole: . ... Basic design option . ... Increased power design option . ... YAMAL-200 COMMUNICATIONS SATELLITE . ... Official WEB-site of S.P.Korolev RSC Energia . ...

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• S.P. Korolev RSC Energia - News
• INTERNATIONAL SPACE STATION
• S.P. Korolev RSC Energia - International Space Station

... The tracking system works in micro-step regime with a computer step of correction = 0.003 arcsec per second of time and a maximum speed of correction up to 4.6 arcsec per second of time. ... The APD module was constructed for performing experiments of receiving of 2 Mbps signals from “ARTEMIS” using the Cassegrain focus of 0.7m telescope. ... GaAs PIN photo diode. ... Laser module with thermoelectric stabilisation of laser diode. ... Electronic module for turbulence compensation system . ...

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• Air Optical Communication Systems

... 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. ...

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• Astronaut Bio: Bruce McCandless II
• Astronaut Bio: James H. Newman (8/2008)
• Astronaut Bio: J. M. Linenger 8/01

MRO Delay Line Socket Initialisation Protocol for Delay Line Computers E. B. Seneta bodie@mrao.cam.ac.uk rev 1.0 13 October 2006 Cavendish Laboratory JJ Thomson Avenue Cambridge CB3 0HE UK Objective To describe the protocol by which network connections are to be made and broken between delay line computers. Scope This document describes how to make and break network connections for the purpose of sending and receiving delay line command, command data, status and telemetry messages. ...

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• http://www.mrao.cam.ac.uk/projects/OAS/pmwiki/uploads/MROIDelayLine.DelayLineSoftwareLibraries/Sockethandshake.pdf,1205319267

STScI . Guidelines for Preparing Viewgraphs and Computer based Presentations to be used in an STScI Webcast . ... Us . ... To reach the largest possible audience with the greatest understanding of your material, ITSD has prepared a few guidelines for preparing viewgraphs and computer based presentations. ... Avoid using colors that appear at the same level of brightness (e.g., red text on a blue background), viewgraphs appear quite different on a projected screen compared to the computer. ...

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• Summary of on-board computers
• John J. Boia, CSC Programmer
• Additional DF-224 Processing

Chaotic generator . Generator of UWB microwave chaotic signals . Frequency band: 3–5 GHz . Spectrum bandwidth: 2 GHz . ... Testbed of UWB high-rate direct chaotic communication system . ... Low-rate system for data transmission . ... The system for controlling this robot is based on technology of UWB wireless communications with chaotic radio pulses as information carriers. ... System frequency band: 3–5 GHz . Control signal bandwidth: 2 GHz . ... Wireless data collecting system . ...