... A three-cell test section roughly representative of the primary mirror was provided for this test by the Steward Mirror Lab. ... Additionally, the tests are intended to determine relative airflow vs. pressure drop characteristics for each of the air flow patterns so the results can be evaluated both as a function of flow rate and of pressure drop along the flow path. ... The bottom (top as installed) was cut out so it could close the chamber for heating and be removed for the cooling tests. ...

... One of the instruments, the Troughton equatorial telescope, is maintained at constant temperature and relative humidity, to reduce the rate of deterioration. ... 3.1 Troughton Equatorial Telescope . Figure 1 shows the equatorial telescope constructed by J E Troughton of London and which was erected in the west dome of Armagh Observatory in 1795. ... Troughton, J. E.: c.1790, Instructions for Adjusting the Troughton Equatorial Telescope, Armagh Observatory Archives , M17.2, 3pp. ...

This document explains some of the directives provided by the core server which are used to configure the basic operations of the server. ... Process Creation . Network Configuration . ... User . ... A single control process is responsible for launching child processes which listen for connections and serve them when they arrive. ... The User and Group directives are used to set the privileges of the Apache child processes. ... The child process creates multiple threads to serve requests. ...

... Apache HTTP Server Version 2.4 . Apache > HTTP Server > Documentation > Version 2.4 . ... This document explains some of the directives provided by the core server which are used to configure the basic operations of the server. ... Related Modules . ... The ServerTokens directive sets the value of the Server HTTP response header field. ... Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our mailing lists . ...

... October 6, 09:00 09:40 . Jorge Melnick (ESO) . ... We present a statistical and temporal analysis of the ground meteorological properties recorded at the five selected sites for hosting the European Extremely Large Telescope (EELT). ... Marc Sarazin (ESO) . The organization and development of the E-ELT site testing campaign by ESO are described. ... The E-ELT Site Testing activities in northern Chile and Argentina are reviewed, and pioneering explorative campaigns are illustrated. ...

... GCR and SCR are primary cosmic rays. 10-15 years after the discovery of cosmic radiation (1919) there emerged two main avenues of investigation in the physics of cosmic rays (CR): 1) nuclear - elucidation of the origin of elementary particles and nuclear interactions; and 2) astrophysical (space physics) - solution of the problem related to the origin and variations (changes in intensity) of CR. ... Besides, the CR flux in interplanetary space is, strictly speaking, not isotropic. ...

The FITS "World Coordinate System" (WCS) standard defines keywords and usage that provide for the description of astronomical coordinate systems in a FITS image header. ... I: "Representations of world coordinates in FITS" , Greisen, E.W. & Calabretta, M.R. (2002), Astronomy & Astrophysics , 395 , 1061-1075. ... This diagram illustrating Bonne's projection with conformal latitude +35 was produced by WCSLIB , a C implementation of the coordinate transformations defined in the FITS WCS papers. ...

Reciprocity relation in checking calculations of the optical properties of non-spherical particles V.G. Farafonov St.Petersburg University of Aerocosmic Instrumentation, St.Petersburg, 190000, Russia and V.B.Il'in Astronomical Institute, St.Petersburg University St.Petersburg, 198504, Russia ABSTRACT There are many methods to solve the problem of light scattering by non-spherical particles , but only the separation of variables method ( ... Michel B., Farafonov V.G. (2000) J. Quant. ...

... Jeremy ``Unbiased'' Drake and Vinay Kashyap . ... We have derived the abundance of iron relative to hydrogen in the corona of the active RS CVn binary HR 1099 (V711 Tau) using EUVE spectroscopic observations and additional X-ray constraints provided by ASCA observations. ... Existing photospheric studies also yield a similar Fe abundance of [Fe/H] ~ -0.4, suggesting at face value an absence of any coronal abundance anomaly in HR 1099 involving Fe. ... J.U. Drake and V. Kashyap 1998, in ASP Conf. ...

... They are concerned with Attitude Control System of the spacecraft, satellite visibility from tracking stations, limits on the satellite autonomous operations during the orbit, and needs for auxiliary operations with the spacecraft. ... Among the operational constraints the most important one is the number of programmed slews per orbit, which determines the maximum number of radio sources to be observed during one orbit. ... System temperature (K) . ... Progress of the RadioAstron Project in Pictures...

Diamond's Stealth 64 Video VRAM is the perfect choice for graphics and video performance. ... The Diamond Stealth 64 Video continues our award-winning tradition, delivering the best price / performance multimedia accelerators available. ... 64-bit graphics performance . ... Designed around a solid 64-bit graphics engine, the Stealth 64 Video VRAM provides unparalleled performance in any environment. ... The Stealth 64 Video VRAM includes hardware to accelerate video playback on the Windows desktop. ...

SAI VO . ... SAI CAS . ... Web Services . ... SAI Web Services . ... This Web site is provided by SAI VO Group and the use of the Web site and the services available at the Web site are subject to the following terms and conditions in this Terms of Use notice. ... SAI VO Group is constantly improving Web site and services and reserves the right to make such improvements or changes to this Web site, the materials and services provided from this Web site without prior notice as it deems necessary. ...

... The Palomar Testbed Interferometer (PTI) is a 110-meter baseline K-Band infrared interferometer located at Palomar Mountain, California. In 1999 an effort was started to provide more observer-friendly observation planning and monitoring tools, such as might be used in NASA interferometer missions. This session illustrates how these prototype tools aid in the observation of spectroscopic binary stars. ... In 1999 an effort was undertaken to prototype mission operations support tools at PTI. ...

Moscow State University Sternberg Astronomical Institute Specification 2.5 m telescope with enclosure version 7.6 |Number|Item description, type |Quanti| | ... 1000 |2.5 m mirror telescope system |1 | ... lightweighting) must provide the short time of | ... stations (ports) must be provided. ... 1006 |Nasmyth focal stations must be provided with a deployable| | ... must be provided. ... Telescope control system and environment conditions | ... 2005 |Camera shutter must provide unvignetted CCD field, | ...

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. ...

. You can define a file or directory by its location in relation to your current directory . The pathname is given as / (slash) separated list of the directories on the route to the file (or directory) from your current directory. A .. (dot dot) is used to represent the directory immediately above the current directory. In all shells except the Bourne shell, the ~ (tilde) character can be used as shorthand for the full pathname to your home directory. Examples . Did You Know? .

... Gas in Thermodynamic Equilibrium Conditions. Stellar Spectrums. Physical Basis of Spectral Classification of Stars. ... The Sun. General Stellar Feature of the Sun. ... Distribution of Brightness in Solar Disc. ... Chromosphere - Observations on Limb and Disc of the Sun, Basic Elements of Structure, Spectrum, Physical State. ... Solar Corona - Observation, Structure, Spectrum, Polarization, Dynamics, Rotation, Physical Condition. ... Interstellar Dust. ... Two Groups of Big Planets. ...

UFO Forum Message . Forums: . ... Post . ... It Really Is Relative . ... Post Message | ... If you are on the Earth the moon does not rotate around its own axis. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... With McMath, Robert R.; Mohler, Orren C. Telluric Bands of CH 4 in the Solar Spectrum. 1949 v.109 p.28 . With Mohler, Orren C.; McMath, Robert R. New Solar Lines in the Spectral Region 1.52-1.75 . ... With Mohler, Orren C.; Pierce, A. Keith; McMath, Robert R. New Solar Lines in the Spectral Region 1.97-2.49 . ... With Mohler, Orren C.; Pierce, A. Keith; McMath, Robert R. Table of Infrared Solar Lines, 1.4-2.5 . ... With McMath, Robert R.; Mohler, Orren C.; Pierce, A. Keith . ...

... Space flight . Crew training . ... A task of selection and preflight training is to form up and to train a crew for a space mission. ... Training in crews on the "Soyuz" transport space vehicle and on the "Earth-Moon-Earth" interplanetary flight program, . ... Basic space training of a lunar crew provides for acquiring a fundamental knowledge on the origin, structure and evolution of the Universe, studying methods and means of space flights performance, use of space for the benefit of mankind. ...