Hide Zen home . ... GIN . ... contains: value_array @> query_array . ... An example for a Gin opclass can be found in ginarayproc.c. Datum * extractValue( Datum inputValue, uint32* nentries) Returns an array of Datum of entries of the value to be indexed. nentries should contain the number of returned entries . int compareEntry( Datum a, Datum b) Compares two entries (not the indexing values) Datum * extractQuery( Datum query , uint32* nentries, StrategyNumber n) Returns an ...

Atlas of the Arcturus MgH line's families spectrum* O. M. Ivanyuk, Ya. V. Pavlenko Atlas consists on three parts: The first part ­ is a spectrum atlas in range from 4925е till 5225е that covers MgH A -X 0-0 , MgH A-X 1-1 and MgH A-X 2-2 line's families The second part of atlas shows range from 5375е till 5625е in accordance with MgH A-X 0-1 and MgH A-X 1-2 families And the third ...

... Packet Format . ... The TCC broadcasts UDP packets containing position information. ... Packet Header . ... int4 . ... double . ... pos, vel double . ... pos, vel, time double . ... See the TCC Message Keywords Dictionary for full definitions of most items in the "data" section of the packet. pos, vel double is a structure containing two doubles: "pos" and "vel"; it contains the same information as the TCC's "coordinates" (p,v,t triplets), but with time given by the "TAIDate" entry in the packet. ...

... Amorphous carbonaceous materials can show a great diversity of optical properties due to the variability in their microstructure. ... The differently pyrolized celluloses are representative for a suit of carbonaceous material ranging from strongly disordered (insulating) to graphitized (conducting) material. Figure: Complex refractive index of hydrogenated amorphous carbon prepared by pyrolysis (annealing) of cellulose at different temperatures. ...

Catalogue of eclipsing variables (CEV) is the world's principal database of eclipsing binary systems with available classification. CEV contains identifications, classifications, photometry, periods, eclipses data, spectral types, references and notes for 7179 systems. Format of the current CEV . CEV main table (~1.0MB) . ... List of systems, erroneously classified as eclipsing binaries in GCVS (they are not included in the CEV main table) Download all files as a single archive (~0.6MB) . ...

... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

... A search for more than one word will find pages that contain all of the words. ... To limit your search to a single group, enter the group name followed by a slash at the beginning of the search string (e.g., "PmWiki/" or "Site/"). ... apple pie . ... apple' in the PmWiki group of pages . ... the phrase 'pmwiki/apple' in all groups of pages . ... For advanced searches , page list parameters (count, name, group, fmt, link, list, order, and trail) can be entered together with the search string. ...

... Several HTML elements, most notably the A element , may contain an attribute which takes a URL as value. URLs, Uniform Resource Locators, are addresses of Web documents. More generally, URLs can be used on the Web to refer to "objects" on the Web or in other information systems. ... http . a Web document (to be accessed using Hypertext Transfer Protocol, HTTP ) . ... file . ... In particular, the specifications say that within a URL only a limited set of characters can be used as such : . ...

... Is the gravity of the galaxies seen in this image high enough to contain the glowing hot gas? ... Stars of NGC 206 . ... Nestled within the dusty arms of the large spiral galaxy Andromeda (M31), the star cluster NGC 206 is one of the largest star forming regions known in our local group of galaxies. ... NGC 1850: Gas Clouds and Star Clusters . ... Globular clusters only 40 millions of years old can still be found in the neighboring LMC galaxy, though, but perhaps none so unusual as NGC 1850. ...

Blackholes2 Forum Message . ... Post . ... A Field Does Not Contain Energy? ... Post Message | ... Here are two sites of many which use rest mass terminology. http://www.iop.org/EJ/abstract/0026-1394/41/5/S04/ . ... This site refers to the energy contained in a static gravitational field. http://www.ias.ac.in/currsci/mar25/articles27.htm . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... The electronic journal Astrophysical Bulletin accepts manuscripts from authors from all over the world in Russian or in English. ... By submitting a paper to the editors, the authors assign the rights to its translation into English (for manuscripts in Russian) and into Russian (for manuscripts in English) to the founders, editorial board, and publishers of the journal but reserve the rest of the copyright. ... After a manuscript is registered, the corresponding author receives an e-mail...

... milky way . ... The Milky Way contains at least 100 billion planets according to survey . ... This artist's illustration gives an impression of how common planets are around the stars in the Milky Way. ... Our Milky Way Galaxy contains a minimum of 100 billion planets according to a detailed statistical study based on the detection of three extrasolar planets by an observational technique called microlensing. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

This module allows "anonymous" user access to authenticated areas. ... Source File: mod_auth_anon.c . ... This module does access control in a manner similar to anonymous-ftp sites; i.e. have a 'magic' user id 'anonymous' and the email address as a password. ... Anonymous_VerifyEmail The example below (when combined with the Auth directives of a htpasswd-file based (or GDM, mSQL etc. ) base access control system allows users in as 'guests' with the following properties: . ... Default: none . ...

... Its apparent diameter of 18.0 arc minutes corresponds to a linear extension of about 180 light years; Kenneth Glyn Jones mentions an estimate of even 20 arc minutes from deep photographic plates, corresponding to about 200 light years linear diameter. It appears somewhat smaller in amateur instruments, perhaps about 10 minutes of arc. ... Red: 20x3 minute subs, totaling 1 hour . Green: 20x3 minute subs, totaling 1 hour . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... Matrices and their invariants, such as order, rank, determinant, play an outstanding role in mathematics. ... To be a little more precise, nonzero square matrices of order $r+1$ (modulo multiplication by a nonzero constant) are represnted by points of the projective space $\Bbb P^{(r+1)^2-1}$. Geometrically, we consider the subvariety of matrices of rank one which is just the Segre variety $S=\Bbb P^r\times\Bbb P^r\subset\Bbb P^{(r+1)^2-1}$. ...

... PUL2 catalog contains original absolute proper motions of 59646 stars in 149 fields with galaxies. ... Mean errors of relative proper motions in PUL2 catalog is 5.5 mas/year. ... The external mean error of one relative proper motion of a bright star of PUL2 catalog is 9 mas/year for both of coordinates. ... After issue of UCAC2 catalog, we decided to improve accuracy of proper motions, using Pul-3 coordinates (of 1950s) as the first epoch, and UCAC2 coordinates as the second epoch. ...

... Radio astronomical tests of the engineering model of the space radio telescope (SRT) were completed in Pushchino - see Results . ... Monitoring of the development of the upgrade on-board 1.35-cm receiver (R-SRT-1.35 cm): . ... EM Engineering Model . ... OHCFS-SRT Space Radio Telescope On-board Heterodyne and Clock Frequency Synthesizer set . OHFS-SRT Space Radio Telescope On-board Hydrogen Frequency Standard . ORFS-SRT Space Radio Telescope On-board Rubidium Frequency Standard . ...

... Cabinets containing the Palomar, ESO and UKSTтАж . Sidebar Left . Sidebar Top . No Sidebar . Sidebar Bottom . Sidebar Right . ... Title: Cabinets containing the Palomar, ESO and UKST survey plates and films. Description: NOTE: All images and movies are copyright and must not be reproduced or mirrored in any form without written permission. ... NOTE: All images and movies are copyright and must not be reproduced or mirrored in any form without written permission. ...

... Shockproof Plastic Battery Storage Box Container Case for 16340 / CR123A Battery . ... Package Contents: 1 x Battery Case, 1 x Strap, 1 x Keyring, 1 x Carabiner . ...

... The relationship of the mass and the observed galactocentric distance R -- (a), and that of the mass and the total dissipation velocity n taken from Gnedin, Ostriker (1997) -- (b). The dotted line in diagram (a) shows the "cone of survival" according to the paper by Surdin and Arkhipova (1998) . ... The solid line is a regression stright line for the main sequence of clusters, and the dotted line parallel to it separates the sequence of clusters of anomalously small mass shown by open triangles. ...