Next: Examples of data contained Up: Electronic database Previous: Future plans . In astrophysics, the optical constants mainly are used to calculate the optical properties of scatterers, i.e. cross-sections, scattering matrix, etc. ... Optical properties derived from such models have been discussed in some books (see, e.g., [ 2 , 3 ]) and in principle can be calculated by using various light-scattering tools which are freely available via the internet [ 4 ]. ...

... Consequently, it is inappropriate to expand and in ordinary spherical harmonics. The proper expansion expresses both and simultaneously in terms of a particular order of generalized spherical harmonics. ... Generalized spherical harmonics start at , and for each , . ... Generalized spherical harmonics obey a sum rule analogous to a familiar one for ordinary spherical harmonics, but it includes an explicit phase factor which depends on the orientation of the two lines of sight. ...

It is a matter of common knowledge that in processes of genesis and evolution of many solar phenomena participate magnetic fields of sunspots. ... As a basis for formation of the database we take data on magnetic fields, collected by set of observatories during many years of observations. ... Section "Magnetic field data" contains data of magnetic field observation for separate sunspots, presented in standard text format (ASCII). ... Description of structure of these files is presented here . ...

QC1 Database User's Guide: . general . ... QC1 browser . ... QC1 database: User's guide . This is the User's guide for the interfaces to the QC1 Database maintained by QC Garching. ... an interface for browsing the content of a QC1 database table . an interface for plotting the content of a QC1 database table. They all connect to the QC1 database containing Quality Control information about the VLT instruments. ... The QC1 database contains a set of tables per instrument. ... table . ...

General Information . ... The conference is organized by the Sternberg Astronomical Institute (SAI) of Moscow University and the IAU Working group "Site-testing Instruments" . ... Use of site data in telescope operation and adaptive optics. ... Recent conferences on this subject (2007, 2008) demonstrated great interest of the community, hence the need for a new meeting. ... Unlike previous recent conferences, this meeting will cover all aspects of site monitoring for optical/IR astronomy. ...

... Huchtmeier Richter A catalog of all published HI observations of external galaxies has been compiled. ... the morphological type (internally coded in a crude 1-byte code based on the system of the RC2 Second Reference Catalog of Bright Galaxies (de Vaucouleurs et al, 1976)) in column 4; . the inclination i (in degrees) used by the authors in column 5. ... A General Catalog of HI Observations of External Galaxies by W.K. Huchtmeier O.-G. Richter, H.D. Bohnenstengel and M.Hauschildt May 1983. ...

. The following general subroutines belong to the category IMAGE-IO: . ``Reading/writing of set data'' In parentheses the name of the source file is given. AXPROPS . Return structure with axis properties for a set. ( axprops.c ) . GDSI_CANCEL . Cancels a transfer started with GDSI_READ or GDSI_WRITE. ( gdsi_read.c ) . GDSI_READ . Reads data from (part of) a set. ( gdsi_read.c ) . GDSI_WRITE . Writes data to (part of) an set. ( gdsi_read.c ) .

Laboratory of Physical-Chemical Basis of Crystallization . ... the melt growth of single crystals of inorganic compounds, mainly metal chalcogenides. a physical-chemical study of these compounds and systems where they originate of in order to facilitate their single crystal growth, or to achieve some desirable properties of these crystals. preparation of semiconductor, mainly metal chalcogenides, nanostructures and investigation of their properties. ...

... IAU XXVIII General Assembly: Special Session #13 . ... Inferring internal rotation in stars . ... Measuring mass, radius, and age from seismology . ... Joint Discussion 13 is part of the scientific programme of the XXVIII General Assembly of the International Astronomical Union, which will take place in Beijing, China, August 27-31 2012. This website contains information directly relevant to the Special Session #13: High-Precision Tests of Stellar Physics from High-Precision Photometry. ...

... Recent Topics . ... MAO main . ... Message from the General Secretary to the IAU membership . ... Тема: Message from the General Secretary to the IAU membership . ... IAU Directory for World Astronomy and NameExoWorlds contest . ... The IAU Directory for World Astronomy ( directory.iau.org/ ) has been created not only for astronomy clubs and organisations, but also more generally for associations having an interest in astronomy (history, culture, etc.) ... www.iau.org/ . ... MAO NASU . ...

... epframes reads a raw event list of a single CCD and exposure from an EPIC PN ODF ([ 1 ]) . ... The auxiliary, main periodic housekeeping and spacecraft time correlation files corresponding to the selected EPIC PN raw event list are needed for the computation of event time tags. epframes flags events with faulty coordinates or times in a FLAG column. ... We note that the RAWX and RAWY coordinates in the output file have values increased by +1 with respect to the raw coordinates in the ODF/SDF file. ...

... Will there be interactive user accounts (telnet/SSH)? Will users be using it as a workstation or is it a server? ... The main difference in today's world between computers is usually not the hardware, or even the OS (Linux is Linux, NT Server and NT Workstation are close family, etc.), it is in what software packages are loaded (Apache, X, etc) and how users access the machine (interactively, at the console, and so forth). ... Keep users off of the servers. ... Restrict physical access to servers. ...

GiST home | Introduction | ... GiST is a height-balanced tree structure with tree nodes containing (p, ptr) pairs, where p is a predicate ( attribute ),which is used as a search key, and ptr is the pointer to data for a leaf node or a pointer to another tree node for a non-leaf node. ... Every node contains between min and max index entries unless it is the root . ... For each index entry (p, ptr) in a non-leaf node, p is true when instantiated with the values of any tuple reachable from ptr . ...

Proposal Identification No.: ... This proposal has not been submitted before. Proposal Type: General Category: Observation Category: Time Requested this semester: Hours Next Semester: Hours already used for this pro ject: Additional Hours required to complete pro ject: Minimum Useful Time : Expected Data Storage: Prop osal Title: ABSTRACT: The purpose of this work is conduct the characterization of near-Earth asteroids (NEAs) accessible to the Arecibo Observatory planetary ...

... DESCRIPTION General Catalog of Variable Stars (GCVS database) . ... Kholopov P.N., Samus N.N., Durlevich O.V., Kazarovets E.V., Kireeva N.N., Tsvetkova T.M., 1990, General Catalogue of Variable Stars, 4rd ed., vol.IV, Nauka, Moscow. Kholopov P.N., Samus N.N., Durlevich O.V., Kazarovets E.V., Kireeva N.N., Tsvetkova T.M., 1992, General Catalogue of Variable Stars, 4rd ed., vol.IV, Bull. ... Kazarovets E.V., Durlevich O.V. Editor-in-Chief Samus N.N., 1998, New Catalogue of Suspected Variable Stars. ...

. ОГЛАВЛЕНИЕ . Предисловие к четвертому изданию . Введение . § 1. Предмет и задачи астрономии . § 2. Подразделение астрономии . § 3. Возникновение и основные этапы развития астрономии . § 4. Практическое и идеологическое значение астрономии . § 5. Основа и источник астрономических исследований . § 6. Краткий очерк строения Вселенной . Глава I . Основные сведения из сферической астрономии . § 7. Видимые положения светил. Созвездия . § 8. Видимые движения звезд, Солнца, Луны и планет . § 9. Географические

Astronomy Discussion Forums . Forums: . ... Discussion Forums . ... A sk your questions or find answers in the Astronomy Net Forums. ... 3608 posts in 1020 threads, 4:1 ratio . ... 269 posts in 124 threads, 2:1 ratio . ... Blackholes - Theories, Discussion, etc. 6432 posts in 970 threads, 7:1 ratio . ... General - . General Astronomy Discussion . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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General Knowleges about Astrometry. ... Universal Tool, Meridian Tool, Meridian Circle, Vertical, Photografic Zenithal Telescope, Astrolabe, Zenith Telescope, Horizontal Meridian Circle, etc. Meridian Principle of Objects' Coordinates Determination. ... Absolute and Relative Methods of Coordinates Determination. ... Photografic Method in Astrometry. Telescopes for Position Observations by Photografic Method. ... Basis and Theory of Photografic Method of Coordinates Determination. ...