... Image Quality of the VLT . Total Optical Control . First light for the ESO VLT unit telescope 1 occurred during the workshop. ... The image shown (Figure 1 ) here was obtained with the VLT on May 16, 1998, in red light (R band), i.e. while the mirror was still uncoated. ... In this diagram (FIgure 2), the measured image quality of the VLT UT1 astronomical images is plotted versus the ``seeing", as measured by the Seeing Monitor, a small telescope also located on top of the Paranal Mountain. ...

As it was already mentioned, the idea behind File Juggler is rather simple: using CGI scripts as processing tools and WWW browser as user interface, display the structure and content of typical anonymous FTP server in a convenient, easily navigated form. ... My P5-133 spends about 0.025 ms on one file when doing linear search with simple criterion (690 ms for 27,000 files, search for substring among file names/descriptions with 70 hits). ... Let's now look whether we can handle 1,000,000 files. ...

The Star called the Sun. The Sun as the star . ... The visible star value . ... Spectrum class . ... 149 597 870 km . ... The Solar energy sourse is the core transformation of the Sun, where temperature is 15 000 000 K. The energy from inside is carried by irradiation and then in the external layer with 0,2 Ra of thikness - by convection. ... The Earth, situating far from the Sun (149 mil km), receives about 2.1017 W of the Solar beam energy (see item "The Solar constant" ). ...

This multi-wavelength image of Abell 520 shows the aftermath of a complicated collision of galaxy clusters, some of the most massive objects in the universe. ... Optical data from the Canada-France-Hawaii and Subaru telescopes show the starlight from the individual galaxies (yellow and orange). The location of most of the matter in the cluster (blue) was also found using these telescopes, by tracing the subtle light-bending effects on distant galaxies. ... NASA/CXC/CFHT/Univ. ...

... In the presence of only uniform magnetic field B , the motion of a charged particle can be described with gyration about the guiding center and motion along the field line. ... In the precence of both magnetic and electric fields, the equation of motion for charged particle (mass m, charge q) is m d v /dt = q ( E + v x B ). ... Because v is independent of the mass and sign of the charge, it is the same for negatively and positively charged particles, and does not create electric current. ...

... The PC is interfaced with a high speed parallel card. ... Data is read from the radar interface hardware and sent over the VME bus to a MVME162 card. From the 162 card the data passes over the IP (Industry Pack) bus to a second high speed parallel card in the WAPP PC. ... WAPP Radar interface as tested , 5 megabytes/second . ... Stop the radar observation, in the vxWorks window . Kill the radar interface gui window . ... There remains a bug in the data taking with the WAPP radar interface. ...

Contents and Select Excerpts . ... Fall 2007 . ... Find out how you can join the ASP today! ... A Book of Universal Proportion, Michael Chabin . Writing the story of astronomy is what we all attempt to do, but how we do it is critical. ... The Real Stars of Harry Potter, C. Ren e James . ... Out of the Past: Astronomy Books for the Young, Then and Now, Wayne Wood . ... Editorial, James C. White II . ... Astronomy Education from the Ground Up . ... Education Matters, David Bruning . ...

... Let's assume initial conditions of 1000 Zinder-noodle plants scattered over these 1000 acres. ... We now introduce a new parameter: The blade-muncher. ... One blade-muncher eats 1 zinder-noodle every 10 days. ... Again, go back to the initial conditions but now we introduce the Zardhogs. ... Following Sunshine Moonbeam's edict, describe the evolution of the system if we start with 1000 zindernoodles on 1000 acres, an initial population of 10 blade-munchers and 2 Zardhogs. ...

SAI VO . ... SAI CAS . ... ConeSearch . ... Catalogs . ... main [?] . ... Object name or coordinates (degrees or HH MM SS or HH:MM:SS): . Center: Radius: deg arcmin arcsec . ... No tables selected. Click on the table name to select/unselect it. ... Click Catalog name to view the catalog Info . Click Table name to select / unselect it for the search . Click [?] to view the table Structure . Click [ New Table ] to upload New Table into your personal catalog . ... SAI MSU | ...

Next: Advantages of the command line interface Up: Ceilidh - On Line C Tutoring System Previous: Question/answer exercises . ... commands . ... Command Purpose commands See commands available set.cse pr1 Select course "pr1" commands See extra course commands lu List unit titles set.unit 4 Set a particular unit lx List exercise titles set.ex 4 Select exercise to solve vq View question setup Set up program skeleton ep Edit program cm Compile program run Run program sub Submit cks Check submitted . ...

Description and Technical Details . In 1980s two medium-size horizontal solar telescopes 50/35000 cm with large spectrographs Czerny-Turner made by Carl Zeiss Jena were installed in the Ondњejov observatory. The Czerny-Turner-spectrographs in the Ondњejov observatory called HSFA1 and HSFA2 according to the German name Horizontal-Sonnen-Forschungs-Anlage ("horizontal device for solar research") have been explored for more than two decades. ... Diffraction grating - Richardson, Spectra-Physics . ...

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . Login . See many more Astronomy Listings by: Category or Alphabet . The Ouranos interface is not in production anymore. ... Listed Since July 15, 1998 . ... 508) 224-6062 . ... 508) 224-6224 . Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

... The first Hubble Space Telescope (HST) servicing mission, STS-61, was one of the most complicated shuttle missions ever planned. ... Astronaut F. A Quintet of Galaxies . ... Virgo Cluster Galaxies . ... Pictured are several galaxies of the Virgo Cluster, the closest cluster of galaxies to the Milky Way. ... Blue Jet Lightning . ... The prominent dust lane and halo of stars and globular clusters give this galaxy its name. ... Low density gas is shown as blue, and high density gas as red. ...

... 23a. The Centrifugal Force . ... 24a.The Rotating Earth . ... Sunlight Earth . ... One important rotating frame is the surface of the Earth, rotating with a period of about 24 hours--more accurately, 23 hrs 56.07 min or 86164 seconds. ... To derive the centrifugal acceleration on the equator (i.e. the force in Newtons on one gram mass, rotating with the Earth), we calculate in meters and seconds . ... Effective gravity on the equator is reduced by the rotation, but only by about 1/3 of a percent . ...

... Figure 1a illustrates the summary diagram (2 log L, log S ) based on the field intensity contour lines for 7 active regions plotted at 200 G steps in the range of 2200­400 G. One can see that the relationship under discussion is well represented by two straight lines, one corresponding to the log S range from 2 to 7.2 and another, from 7.2 to 9. ... Then, we plotted 2 log L versus log S for all field lines of a given intensity, no matter which sunspot or sunspot group they belonged to. ...

... Multiexposition 34 images Sun 1/1000 sec f/22 and 1 image background. ... It shows position of the Sun on the sky in the same time of a day during one year. Analemma - a trace of the annual movement of the Sun on the sky - is well known among experts of sun-dials and old Earth's globes as a diagram of change of seasons and an equation of time. ... Previously, the position of the Sun on the sky was calculated with computer as well as optimal moments of time for taking each of the exposures. ...