The VLTI Calibrator Selector Tool is a tool intended to assist in the selection of suitable interferometric calibrators for VLTI observations with MIDI and AMBER. It uses a model of the VLTI and its instruments to assess the fringe visibility, given the observed bandpass, the geometry, spectrum, and coordinates of the target and the time at which the observations are to be made. ... The tool offers an HTML/Java based interface and consists of two pages. ... The quality flag depends on LDD_chi2. ...

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Observing . ... Astronomy for Kids . ... MAVEN spacecraft returns first Mars observations . ... NASA s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft has obtained its first observations of the extended upper atmosphere surrounding Mars. ... MAVEN is the first spacecraft dedicated to exploring the tenuous upper atmosphere of Mars. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

nearneighbor - A Nearest neighbor gridding algorithm nearneighbor [ xyzfile ( s ) ] -G out _ grdfile -I x _ inc [ m|c ][/ y _ inc [ m|c ]] -N sectors -R west / east / south / north [ r ] -S search _ radius [ m|c|k|K ] [ -E empty ] [ -F ] [ -H [ nrec ] ] [ -L flag ] [ -V ] [ -W ] [ -: ] [ -bi [ s ][ n ] ] nearneighbor reads arbitrarily located (x,y,z[,w]) triples [quadruplets] from standard ... Default is quadrant search, i.e., sectors = 4]. ... H Input file(s) has Header record(s). ...

... When are new sefd curves made . ... The fit types used . ... When the new sefd curve is installed it contains two dates: . The starting date for this sefd curve. ... yyyy ddd This is the start of a sefd curve set of data. yyyy ddd is the start date for the sefd curve. yyyy is a 4 digit year (2004) and ddd is the day number of the year counting from 1. all other lines are sefd curve data. ... azterms1 : c4*cos(az) +c5*sin(az) + c6*cos(2az) + c7*sin(2az) + c8*cos(3az) +c9*sin(3az) . ...

. Statistics of sunspot activity . The sunspot indices . My observations . NGDC's observations . The solar regions . Links . About authors . Russian pages . The solar regions . NOAA 11300's . NOAA 11200's . NOAA 11100's . NOAA 11000's . NOAA 10900's . NOAA 10800's . NOAA 10700's . NOAA 10600's . NOAA 10500's . NOAA 10400's . NOAA 10300's . NOAA 10200's . NOAA 10100's . NOAA 10000's . NOAA 09900's . NOAA 09800's . NOAA 09700's . NOAA 09600's . NOAA 09500's . NOAA 09400's . NOAA 09300's .

. In an effort to provide a centralized database for indexing locations and descriptions of Shuttle debris, the editors of Astronomy Net have generated a database and web page where reports can be logged. This may or may not prove useful for cataloging debris reports, but Astronomy Net is happy to dedicate computer resources to help out any way possible. We express our sympathy and prayers to the families and friends of the Columbia crew. If you have located Shuttle debris, report it here.

Next: Results & Discussion Up: Coronal Hole Diagnostics out Previous: Introduction . ... The dates of the observations discussed here, their locations, pointing, slit sizes and exposure times are given in BTDW. ... Line fits are given by the dotted line. ... An estimation of the errors in the derived parameters was obtained using the GA-derived parameters as an input for a ``classical'' IDL-CURVEFIT procedure (Peter, 1999; Peter & Judge, 1999). ...

. Information for database users . Go to previous page . Description and abbreviations (minor planets) . Description and abbreviations (planets and satellites) . Information about observations . List of publications .

... Microlocal Analysis is a theory of Pseudo-Differential Operators and Fourier Integral Operators (PDOs and FIOs). ... Microlocal analysis comes in few flavors. ... We will consider semi-classical PDOs and FIOs: one can always get from there to standard PDOs and FIOs but semi-classical theory has more applications. Less formal description of (semi-classical) microlocal analysis is ``a semi-classical limit of quantum mechanics'' or ``high-frequency limit of electrodynamics'' (etc). ...

ADASS 97 Final Program . ... Program At-A-Glance . ... Registration; Poster and Demo set-up . ... Session 1: Computational Astrophysics etc. ... COFFEE BREAK / POSTERS / DEMOS . ... Session 2: Applications . ... LUNCH BREAK / POSTERS / DEMOS . ... Session 3: Computational Infrastructure . ... Session 5 : Data Analysis Applications . ... BOF Room A . ... Session 7 : Data Flow and Scheduling - I . ... LUNCH BREAK / POSTERS . ... COFFEE BREAK / POSTERS . ... Session 10: Astrostatistics/Data Bases . ...

... The reduction system of observations FADPS (description in Russian) (Flexible Astronomical Data Processing System) for data of wide-band receivers of the first observation cabin of the radio telescope RATAN-600 had been created under the Unix-like operational system DEMOS for computers of the SM-1420-type (PDP/11) in 1987 for observation analysis and estimates of coordinates and flux densities of radio sources. ... FADPS: flexible astronomical data processing system at RATAN-600 in UNIX environment....

... Space flight . ... Simulators . ... Space camp . Space Hotel . ... The "ATLAS Aerospace" company invites all the volunteers to pass a course of space training in the simulators of the Yuri Gagarin Russian State Scientific-Research and Test Center of Cosmonaut Training. ... The staff of the Mission Control Center regularly participates in such training, thus enabling to improve its interaction with the crew. ... Copyright 2000-2016 ATLAS Aerospace . ...

... The Earth orientation parameters UT1 and polar motion (x pol ; y pol ) are relat­ ed with the values of UT0 and VOL obtained from the LLR analysis for a station with geocentric longitude and latitude (–; OE) by the following expression: 7 UT0 \Gamma UTC = UT1 \Gamma UTC + (x pol sin – + y pol cos –) tan OE 15 V OL = x pol cos – \Gamma y pol sin – At least four normal points for each station--reflector pair at one day were accepted for the diurnal UT0 estimations. ...

ПУБЛИКАЦИИ - 1993 год . ... Annales Geophyscal, - 1993, - v. 11. ... Radio observations of compact solar sources located between sunspots. Solar Physics, 144 (1993), - c. 59-68. ... Kardapolova N.N. The dection of the S -componenten sunspot source in the initial stage of active region development Annales Geophysicacal. - 1993. - vol.11. ... Fine coronal structure of solar active regions from multi-frequency microwave observations of the July 11, 1991, solar rclipse in Mexico. ... 144. ...

... Structure of Data . ... Catalog . ... The SAI OCL Catalog site provides several VO-enabled modes of operation: . VO-enabled catalog data analysis from a browser . ... Endpoint URL is http://ocl.sai.msu.ru/catalog/conesearch/ . ... VO-enabled catalog analysis from a browser . Presently, this recipe works with Firefox (Windows, MacOS, Linux), Internet Explorer (Windows) and Opera (Windows) browsers with Java plugin 1.6 installed. ... Main TOPCAT window with SAI OCL catalog loaded will appear. ...

... IC1848 . IC1848 - The "Embryo" or "Soul" Nebula . ... It is variously referred to as the "Soul Nebula" or "Embryo Nebula", due to its resemblance to a baby. ... This image is a tricolor narrowband image, taken with Ha, OIII, and SII filters. ... Astrodon 50mm Ha, OIII, and SII filters, with 6nm bandpass . ... Ha: 8 hours of 30 minute subs . OIII: 14.5 hours of 30 minute subs . SII: 11.75 hours ...totalling 34.25 hours . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

JSC Celebrates 40 Years of Human Space Flight . ... On July 7, 1961, NASA Administrator James E. Webb directed the establishment of preliminary site criteria and a site selection team. ... The Mercury-Atlas 6 mission marked the free world's first orbital manned flight. ... This is one of several edifices located around Houston and southern Harris County that served as temporary office facilities for the early Manned Spacecraft Center (MSC) while the present 1625-acre site was being developed. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Our Galaxy . ... Other Galaxies . ... Space Flight . ... When Galaxies Collide (Image credit: ALMA (ESO/NAOJ/NRAO). Visible light image: the NASA/ESA Hubble Space Telescope) . In the southern sky constellation of Corvus (the Crow), we see the Antennae Galaxies (alias NGC 4038 and 4039). ... Your email address will not be published. ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

MATHEMATICAL MODELING: . ... This model is developed on the base of the probabilistic description of the collisional aeronomical processes and is realized on a computer as the numerical system (stochastic model). ... Shematovich, V.I., Bisikalo , D.V.             Nonequilibrium processes in the planetary and cometary atmospheres. ... In Russian) . ... Piarnpuu , A. A.; and Shematovich, V. I.       Construction of structural stochastic models of collision processes in rarefied gas media (abstract) . ...

. You interact with the Unix operating system by entering a command at the shell prompt . You can look up the command in the On-line Manual for a complete description of it. About commands . Did You Know? . Where are commands located? . Entering commands . Redirecting standard input and output . Connecting commands together . Creating a command alias . Locating a command . Making other commands available . Writing your own commands .