... References: %observed energy levels: Martin, W.C., Sugar, J., Musgrove, A., Dalton, G.R., 1995, NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61 %theoretical energy levels: Zhang, Sampson, Fontes, ADNDT, 1990, 44, 31 %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % Enrico Landi 1997 . ... contains the spline fits to the electron collision strengths scaled according to Burgess and Tully (1992). ...

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. ...

... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

The Astronomical Catalog portion of CDBS contains several atlases consisting of both observed and model stellar,galactic, and emission line object spectra as well as HST standard stars spectra are available in STSDAS table format for use in the calibration of HST instruments, with synphot, with the exposure time simulators, or for any other purpose. this is it There are two independent directories containing the spectra of ultraviolet and optical standard stars. ... For details see K93MODELS . ...

... Classes . ... casa::Aberration . ... More... #include < Aberration.h > . ... Aberration (const Aberration &other) . ... operator() ( Double epoch) . ... Actual Aberration for a certain Epoch is calculated by the () operator as Aberration(epoch), with epoch Double MJD, values returned as an MVPosition . ... Double casa::Aberration::aval [3] [private] . ... Double casa::Aberration::checkEpoch [private] . ... Double casa::Aberration::dval [3] [private] . ... const Double casa::Aberration::INTV [static]...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

... MOTIVATION !Operations at observing sites should have quick and reliable access to the data, therefore observing sites are provided with their own local database server. ... SERVICE MODE OPERATIONS Standard service mode operations: !OBs produced by investigators are submitted to Garching. ... OBs moved to the operational database at Garching are replicated to the operational database at the observing sites by the same mechanism used for standard service mode Obs. ...

... Table of Contents - Index - PS reprint - PDF reprint . ... All RXTE telemetry will be archived in a hierarchical database consisting entirely of FITS Binary Tables. We describe an interactive tool, the XTE Data Finder (XDF). ... Our basic design contains a three level hierarchy: Master Index, Subsystem Index, and Data Table. ... The Master Index acts as an observation catalog with references to Subsystem Indices, while the latter contain configuration information and references to the Data Tables. ...

... Good detailed technical description of ISDN, somewhat more detailed than the Stallings book in some areas. ... Dan Kegel's ISDN Page - This is basically the center of the ISDN web, mentioned most commonly as a good place to start. comp.dcom.isdn Frequently Asked Questions (FAQ) - A great bunch of information, mostly consumer-oriented. ... NIST's High Speed Networks Group Home Page . ... Bellcore ISDN Home Page - National ISDN . ... Ascend Communications Home Page - they make ISDN equipment. ...

... The New 1997 IEEE Standards Products Catalog features the complete listing of standards publica-tions and services IEEE Standards offers, along with the information you need to place your order. ... Books and Other Products on Standards - contains a detailed listing of informative print and electronic publications relevant to standards and their implementation in areas of electrical engineering, electronics and computer technology. ... IEEE Standards Products Listing 22 . ... Power Electronics 41 . ...

... 237S (SIMBAD/NED BibCode) ================================================================================ Keywords: Sun: UV radiation - atmospheric effects - Sun: atmosphere - lines: identification Description: An ultraviolet atlas of the solar spectrum with a spectral resolution of 15mA in the region 1948-2000A is presented. ... The wavelength atlas with a list of about 550 lines has been synthesized from data at center of the Sun ({mu}=1) and at {mu}=0.89, smoothed out over an area of 30 arcsec. ...

... 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. ...

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... O.B Slee , Australia Telescope National Facility, CSIRO, Sydney bslee@atnf.csiro.au ----------------------------------------------------- ... ----------------------------------- 1- 8 A8 --- Name IAU name 9 A1 --- nFlag Flagged '*' or '#' 11- 12 I2 h RAh Right Ascension B1950 (hours) 14- 15 I2 min RAm Right Ascension B1950 (minutes) 17- 20 F4.1 s RAs Right Ascension B1950 (seconds) 22 A1 --- DE- Declination B1950 (sign) 23- 24 I2 deg DEd Declination ... Dulk, G.A. Slee, O.B. 1972, Aust. ...

... Updates to HST Standard-Star Fluxes . ... These data are in an STScI data base named CRCALSPEC and have been divided into two categories to help the user understand the origin and accuracy of these flux distributions. ... 1990, ApJS, 73, 413) and Oke (1990, AJ, 99, 1621) spectra are available. Oke (1990) used the DoubleSpectrograph on the 5-m Hale Telescope to obtain these spectra for HST calibration; and these data are identified in the HST data bases by the keyword OBSMODE=OKE DBSP. ...

... Does it have to be a constant-flux source? ... Source added during later "Forum" discussion. ... The various missions represented at the discussion identified their usage of these sources as follows: XMM : RXJ1856 1E0102 Crab N132D GD153 Chandra : RXJ1856 1E0102 CAS A G21.5 Suzaku : RXJ1856 1E0102 CAS A Crab RXTE : CAS A Crab Swift : RXJ1856 1E0102 CAS A Crab INTEGRAL : CAS A Crab LABORATORY ABSOLUTE STANDARDS ------------------------------- Considering the resort, in other...

... The material in "From Stargazers to Starships" meets several important requirements of the national standards. Pages cited below are from National Science Education Standards National Academy Press, Washington 1995. ... For example: the sections on astronomy not only describe calendars and sundials (including their construction), but also the astronomy of the ancient Greeks, including two different ways in which ancient Greeks estimated the distance to the Moon. ...

This service contributes to the International Service of Geomagnetic Indices (ISGI) of the IAGA . ... The Kp numbers of the previous month are available in tabular format . ... There are available also historical and current Kp and derived indices per anonoymos FTP (see below). ... U.S.A. FTP server: ftp://ftp.ngdc.noaa.gov/STP/GEOMAGNETIC_DATA/INDICES/KP_AP/ . monthly update) . ... contains the monthly Kp / ap tables in a simple text format readable for both humans and computers (*.tab). ...

spectrum1d - compute auto- [and cross- ] spectra from one [or two] timeseries. spectrum1d [ x [ y ] file ] -S segment _ size ] [ -C ] [ -D dt ] [ -N name _ stem ] [ -V ] [ -W ] [ -bi [ s ][ n ] ] [ -bo [ s ] ] spectrum1d reads X [and Y] values from the first [and second] columns on standard input [or x [ y ] file ]. ... Units same as ypower. name _ stem .npower Power spectral density of the noise output. Units same as ypower. name _ stem .gain Gain spectrum, or modulus of the transfer function. ...

... printhdrV - print datataking headers in ASCII (ao) printhdrV [ -s ] . printhdrV is a program to convert ao datataking headers from binary to ASCII, format them with labels, and then output this data to the standard output. ... Arecibo datataking records contain a header followed by the data. ... Only output the standard header section. printhdrV can be used in conjuction with the stripVme (1l) and grep (1) programs to dump the headers of datataking tapes to the screen or a file. ...