... RadioAstron Mission Element Overview . RSOG Pre-Observation Products . GOCG Pre-Observation Products . Navigation Pre-Observation Products . Ground Tracking Station (GTS) Products . ... Navigation Post-Observation Products . GOCG Post-Observation Products . RSOG Post-Observation Products . DPC Post-Observation Products . Correlator Products . Mission Operations Data Transfer . ... Mission Element Points-of-Contact . ... Appendix A: Acronyms and Abbreviations . ...

. Shell procedures may use the trap command to catch or ignore Unix operating system signals . The form of the trap command is: trap ' command-list ' signal-list . Several traps may be in effect at the same time. If multiple signals are received simultaneously, they are serviced in ascending order. To check what traps are currently set use the trap command. For example: trap . Most common signals to be caught . Handling command lists . Examples .

. The enclosure for the Solar Fourier Transform Spectrometer, commonly called the FTS Tank, at the McMath-Pierce Solar Facility on Kitt Peak. The tank is shown open, with some of the equipment racks required to operate the FTS visible in the background. Credit: Tom Eglin, Mark Hanna/NOAO/AURA/NSF

... Next, the screen displays "Press 0 to align or Mode for Menu." Press "0" if you wish to begin Automatic alignment (or Easy Align, depending on your telescope model), or press Mode if you wish to choose a manual alignment method ("Automatic Alignment" displays, and you can press MODE to go through the menu to find other alignments). ... Note: If you press the "?" key while "Ctr Brightest Star" displays, the alignment star that AutoStar has chosen will display. ... Alignment successful" displays. ...

... ESA/NASA Solar Probe . ... Mission Operations . ... Ulysses is a solar probe launched in 1990 that has made the first-ever measurements of the Sun from a polar orbit. ... Formerly called the International Solar-Polar Mission (ISPM), Ulysses is an exploratory mission carried out jointly by ESA and NASA. ... NASA provided the launch aboard the Space Shuttle Discovery (together with the upper-stage motor) and the spacecraft power generator, and is responsible for the remaining experiments. ...

... every new catalog of objects has to be contained in the UNIX directory having the same name as the catalog of objects; . ... the programs for local operations (programs of low level) with the catalog of objects are also in the same directory; . brief characteristics and names of the programs and file with the description of the catalog are stored in the file cats_descr ; . ... All astronomical catalogs have a different format and list different observables. ...

Automatic Detection of NEOs in CCD Frames . ... CCD frames obtained with modern telescopes with robotic operation allow carrying out standard observation programs for detection of peculiar objects on stellar backgrounds, as is the case of Near Earth Objects (NEOs). ... In this paper, we present original algorithms for automatically detecting dim NEO images in telescope frames, considering both sidereal and differential tracking [2]. ...

Next: AXAF Recipes Up: ROSAT HRI Recipes Previous: Quantum Efficiency Correction (a.k.a. For some observations, a significant amount of data may have been rejected during SASS processing because the background level was higher than the calculated threshold for rejection. ... REJECTED EVENTS . ... The recipe will allow the user to include rejected events in the generation of a new qpoe file and filter on the background level. ... This creates a qpoe file with standard + rejected events. ...

Lessons learned from the Thirty Meter Telescope site testing Tony Travouillon Sebastian Els, Angel Otarola, Reed Riddle, Matthias Schoeck, Warren Skidmore TMT.XXX.PRE.05.0XX.DRF01 1 Introduction TMT and its Site testing. Important choice before going on site. ... Considerations during analysis of the data. TMT.XXX.PRE.05.0XX.DRF01 2 Some Background about the TMT Site Testing TMT is a 30m, segmented, RitcheyChretien telescope design. ... ASCA Cloud Cover Analysis So how do we do it in practice? ...

RSSI Network Operation Centre (NOC) provides 24 hours a day, 7 days a week monitoring and maintaining of all RSSI network components (including routers, leased lines to sites, interconnection links, dialup service, telecommunication equipment and etc.) from Network Operation Centre Interconnect Facility at Space Research Institute RAS in Moscow. ... NASA Internet NOC to isolate and resolve circuit, routing hardware and/or software failures; . ... NMS alarms and monitoring tools . ... User Support . ...

ELF-VLF ADVANCED SIGNAL ANALYZER AND SAMPLER SAS-2 . ... Therefore the SAS-2 must be input signals in the band 20Hz…16kHz (or 20kHz) from as other SI. In this case the SAS-2 must get the wide-band ELF-VLF input signal form the . ... e) Onboard Time: The time is needed to program scheduled data collections ! ... MODE 2 : In this mode the SAS-2 investigates that the input signals appearing in the three (six) input channels are a whistler or not. ... Address of input channel is added to each sample. ...

... Observational Zoo of Binaries with Compact Stars . Evolutionary Scenarios of Binary Systems . ... Evolution of Magnetic Rotators . ... Mixing types of E-P-A binary systems with non-zero orbital . ... Binary Pulsar Diversity and High Neutron Star Birth Velocity . ... Ejectors in Massive Binary Systems . ... Other Candidates for Ejecting Stars in Binary Systems . ... Cosmic Rays and Evolution of Binary . ... Sky in Gravitational Waves . ... Gravitational Waves from Coalescing Compact Binary Stars . ...

About us . ... Telescopes . ... Apart from the 6-meter telescope BTA two small telescopes are operative at SAO: the 1-m and 0.6-m telescopes, both manufactured by Carl Zeiss, Jena, are located near the BTA. ... These telescopes are used for adjusting the equipment and techniques of observations used at the BTA. ... The observational time allocation and also a brief description of the equipment of the 1-m telescope, which is used either permanently or mainly on this telescope, are presented below. ...

README for XFree86 on OS/2 : Hardware and Software Requirements . ... XFree86 does not use the video services of the OS/2 operating system. ... XFree86/OS2-3.3.6 may use a local named-pipe connection or a TCP/IP based network connection. ... There are reports that with EMX 0.9 fix 4, you can also use the new 32 bit IBM TCP/IP 4.1 product. The old IBM TCP/IP 2.0, that comes with the IBM PMX product may be used with Warp as well, although it is no longer supported by IBM. ...

... Comet Animation . ... Comet structures are diverse and very dynamic, but they all develop a surrounding cloud of diffuse material, called a coma, that usually grows in size and brightness as the comet approaches the Sun. ... As comets approach the Sun they develop enormous tails of luminous material that extend for millions of kilometers from the head, away from the Sun. ... The evaporated molecules boil off and carry small solid particles with them, forming the comet's coma of gas and dust. ...

GRANAT is the Russian x-ray sattelite launched to the high apogee orbit (200,000 km) and operated almost for 10 years (1989 -1999) , carrying out four major instruments: French SIGMA coded-mask hard x-ray telescope (30-1000 keV), Soviet ART-P coded-mask telescope (2??-60?? keV), all-sky monitor WATCH (6-150 keV), and a gamma-burst detector PHEBUS . ... Since September 1994, GRANAT is in the survey mode. ... Explore pages devoted to individual GRANAT instruments (including main scientific results): . ...

. уВµуГЪуГ®уВµVLBIуГЧуГнуВ¦уВзуВпуГИ я®П Space VLBI Project . VSOPшиИчФЁя®ИуБпуВЛуБЛя®Й . я®П VSOP Project (1997-2005) . VSOP-2шиИчФЁя®ИASTRO-Gя®Ъф¦нцнвя®Й . я®П VSOP-2 Project (terminated) . хоЗхоЩчзСхнжчаФчйґцЙА я­Ь ISAS . хоЗхоЩшИкчйЎчаФчйґщЦЛчЩЎцйЯцзЛ я­Ь JAXA . Copyright 2006 Radio Astronomy Group .

Geometric group theory is the study of groups from the geometric viewpoint. ... Background from group and graph theories. Word problem. Cayley graphs. The word problem and Cayley graphs. Dehn's solution to the word problem for the hyperbolic surface groups. Coxeter groups. Tits' solution to the word problem for Coxeter groups. Cayley graphs and group actions. ... Introduction to Gromov hyperbolicity. ... P. Scott, T. Wall, Topological methods in group theory, London Math. ...

SOFIA s Mirror . ... Credit Copyright: Ron Strong ( ARC / NASA ) Explanation: The candy-dish appearance of this high-tech astronomical mirror is striking. ... Recently unveiled, the telescope mirror is destined to fly on the Stratospheric Observatory For Infrared Astronomy ( SOFIA ). Since water vapor in Earth's troposphere tends to block infrared light, SOFIA will operate from a modified Boeing 747 jetliner at altitudes above 40,000 feet. ... NASA Web Site Statements, Warnings, and Disclaimers . ...

Introduction OCAAS 2.0 November 12, 1998 1­1 1 Observatory Control and Astronomical Analysis System 1.1 Introduction OCAAS is a complete UNIX software package for the local and remote operation of an astronomical observatory. ... It controls all aspects of the telescope mount, CCD camera, filter wheel, focuser, weather instrumentation, power supply, GPS receiver, internet or phone line communications, dome and shutter hardware. ... Dome flats may also be taken automatically if desired. ...