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1501. Remote Access to the Tycho Catalogue and the Tycho Photometric Annex
Next: The LASCO Data Archive . Previous: The XTE Data Finder (XDF) . ... The TYcho Catalogue (TYC) will contain astrometric and mean (de-censored) photometric data of some 1,058,000 objects. ... This paper presents an access and research tool for the TYC and the TEPA to be used locally with widget based GUIs or remotely by HTML-form based WWW-pages. ... Since the TEPA catalogues are intended to be used together with the TYC the user will have access to all published data of a particular star. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/wiceneca.html -- 13.7 Кб -- 23.06.1998
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1502. FITS BoF Session
... We summarize the discussions that took place during the FITS Birds of a Feather (BoF) session, which was held Monday, September 23, 1996 at 16:00. For completeness we also include a summary of the 1995 FITS BoF, which was never published. ... Oral papers by Clarke, Allen, Mink, Mandel, and Wells were presented in a special FITS afternoon session, and posters were presented by Pence, Farris, Tripicco, and Stobie; see the papers by these authors elsewhere in this volume. ... CFITSIO (Pence) . ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/wellsd1.html -- 9.5 Кб -- 23.06.1998
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1503. Speculations on the Future of FITS
... Opinions are offered on the likely outcome of current FITS negotiations, such as the year-2000 problem and the WCS proposal, and on possible subjects of future data interchange format negotiations in astronomy. ... Instead, the purpose of FITS is agree on the syntax of a language for talking about astronomical data, and to agree on the semantics in only a limited range of cases. ... It is easy to speculate about future FITS agreements-it is much harder to actually negotiate them! ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/wellsd.html -- 14.9 Кб -- 23.06.1998
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1504. The LASCO Data Archive
Next: The Evolution of the HST Archive . ... Up: Data Archives . ... The data archive for the Large Angle Spectrometric Coronagraph (LASCO) and the Extreme Ultraviolet Imaging Telescope (EIT) is designed to contain 1 B of image data in an easy to use CD-R based archive. ... The only disadvantages are that CD-Rs are much slower to access than magnetic disks and require several hours to assemble a CD-ROM image and write the CD-Rs. ... Large CD-ROM jukeboxes meant that all of our data could be on-line. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/wangd.html -- 12.0 Кб -- 23.06.1998
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1505. The Time Interferometer: Synthesis of the Correlation Function
... Previous: Time Series Analysis of Unequally Spaced Data: Intercomparison Between Estimators of the Power Spectrum . ... The aperture synthesis technique well known in radio astronomy is adapted to the spectral analysis of the time series. ... Analogously, when the time series is given at all points of some interval or at time points regularly spaced within the interval, the evaluation of the periodogram can be made quite easily. ... Now we apply this idea to time series analysis. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/vityazevv2.html -- 16.2 Кб -- 23.06.1998
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1506. Time Series Analysis of Unequally Spaced Data: Intercomparison Between
... Previous: Determination of Variable Time Delay in Uneven Data Sets . ... It is shown that the likeness of the periodogram and the LS-spectrum (both estimators of the power spectrum are widely used in the spectral analysis of time series), depends on the properties of the spectral window corresponding to the distribution of time points. ... Present day theory and practice of the spectral analysis of unequally spaced time series are based on two approaches. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/vityazevv1.html -- 12.9 Кб -- 23.06.1998
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1507. The CATS Database to Operate with Astrophysical Catalogs
... O. V. Verkhodanov and S. A. Trushkin . ... A public database of astrophysical (radio and other) catalogs (CATS), has been created at the Special Astrophysical Observatory (SAO). It allows a user to execute a number of operations in batch or interactive mode, e.g., to obtain a list and parameters of catalogs, to extract objects from one or several catalogs by various selection criteria, to perform cross-identification of different catalogs, or to construct radio spectra of selected sources. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/verkhodanov3.html -- 13.4 Кб -- 23.06.1998
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1508. Non-parametric Algorithms in Data Reduction at RATAN-600
... Up: Algorithms . ... Non-linear and non-parametric algorithms for data averaging, smoothing and clipping in the RATAN-600 flexible astronomical data processing system are proposed. Algorithms are based on robust methods and non-linear filters using an iterative approach to smoothing and clipping. ... The history of algorithms, based on the robust methods and non-linear filters using an iterative approach to smoothing and clipping, began twelve years ago in the data reduction at the RATAN-600. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/verkhodanov2.html -- 11.9 Кб -- 23.06.1998
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1509. Multiwave Continuum Data Reduction at RATAN-600
Next: NOVIDAS and UVPROC II-Data Archive and Reduction System for Nobeyama Millimeter Array . ... The RATAN-600 radio telescope allows us to carry out simultaneous multi-frequency observations using wide-band radiometers. ... Using these features a flexible astronomical data processing system (FADPS), operating on different UNIX platforms, was created. ... FADPS commands may be executed directly in UNIX, in scripts, or using a special shell for our data processing system in the X-Window system. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/verkhodanov1.html -- 11.9 Кб -- 23.06.1998
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1510. Mapping the Jagiellonian Field of Galaxies
... The analysis of two-dimensional galaxy distribution in the Jagiellonian Field (JF) was carried out by the wavelet technique. The positions of galaxies were taken from the Revised Jagiellonian Field Catalogue (RJFC) based on digitized scans of the JF original photographic plates. We discuss briefly the procedure of star/galaxy separation applied by us to the RJFC, the algorithm and the first results of mapping of the selected parts of the RJFC. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/vavilova.html -- 14.7 Кб -- 23.06.1998
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1511. A Computer-Based Technique for Automatic Description and Classification of
... A technique allowing automatic representation by a relatively small number of independent parameters based on the principal component analysis of data sequences is presented. ... In recent years the spectrum of observed astronomical data can be characterized as greatly varied. ... In this instance, the problem of initial description and classification of newly-observed data becomes most urgent, especially if there is a lack of preliminary observational material and theoretical expectations. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/vasilyevs.html -- 11.6 Кб -- 23.06.1998
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1512. Data Format for the NOAO Mosaic
... Previous: IRAF Data Reduction Software for the NOAO Mosaic . ... NOAO is building a large format (8K 8K pixels) camera using a mosaic of eight 2048 4096 CCDs with eight amplifier readouts initially, and eventually up to 16. This paper outlines the data format and keyword definition methodology for data from this instrument. ... NOAO CCD Mosaic data is stored as a single FITS file for each observation. ... The basic image data consist of separate FITS Image Extensions for each amplifier. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/valdesf2.html -- 15.5 Кб -- 23.06.1998
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1513. IRAF Data Reduction Software for the NOAO Mosaic
Next: Data Format for the NOAO Mosaic . ... Figure 1 illustrates the components and data flow of the NOAO CCD Mosaic Software System. ... Figure: The NOAO CCD Mosaic Software System. ... It is a high level task, with a sophisticated graphical user interface (GUI), to perform pipeline calibrations, reductions, data quality assessment, archiving and possibly other functions, by communicating with IRAF tasks which access the observation files through the IRAF FITS Image Kernel (Zarate & Greenfield 1995). ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/valdesf1.html -- 15.1 Кб -- 23.06.1998
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1514. NOVIDAS and UVPROC II-Data Archive and Reduction System for Nobeyama Millimeter
... Previous: Multiwave Continuum Data Reduction at RATAN-600 . Up: Software Systems . ... A workstation-based data archive and reduction software system is developed for the Nobeyama Millimeter Array (NMA). NOVIDAS is used for archiving the output data from the interferometer onto 8mm tapes. ... The calibration and reduction of the data are handled by UVPROC II. ... The data archived by NOVIDAS are calibrated using UVPROC II. ... NOVIDAS is an X-windows-based data archiving system for the NMA. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/tsutsumit.html -- 10.0 Кб -- 23.06.1998
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1515. The Evolution of the HST Archive
Next: Implementing a New Data Archive Paradigm to Face HST Increased Data Flow . ... There have been two generations of archive systems (DMF and DADS) and user interfaces (STARCAT and StarView). In this paper, we describe recent projects and future directions in the continued evolution of the HST Archive. ... StarView is supported in CRT and X/Motif modes on Sun and Digital platforms. ... We continue to improve the HST Archive systems-DADS, StarView, and the new Web interface. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/travisanoj.html -- 15.9 Кб -- 23.06.1998
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1516. RoadRunner: An Automated Reduction System for Long Slit Spectroscopic Data
... Driven by a dramatic, almost fivefold, increase in data flow, we developed a system, RoadRunner for the automatic and rapid reduction of CCD two-dimensional long slit data taken at the 1.5 meter telescope at the Fred L. Whipple Observatory on Mt. ... The reduction process takes the data from raw two-dimensional images to one-dimensional wavelength calibrated spectra with measured redshifts which have been checked for accuracy. ... In 2.75 years of operation, 22,889 FAST spectra have been reduced. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/tokarzs.html -- 12.4 Кб -- 23.06.1998
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1517. The Data Handling System for the NOAO Mosaic
Next: IRAF Data Reduction Software for the NOAO Mosaic . ... This paper presents the data handling system being built for the NOAO Mosaic by the IRAF group at NOAO. This system consists of a Data Capture Agent which assembles and saves the disk images, a Real Time Display and Mosaic viewer used to view the very large (134MB) Mosaic images during and after readout, and IRAF software for CCD processing, quick look, and general data interaction. ... Figure: Data Handling System Architecture. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/todyd.html -- 14.9 Кб -- 23.06.1998
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1518. ADASS VI Table of Contents
... Table of Contents - Index . ... Software Systems . ... FITS-Flexible Image Transport System . Data Archives . ... Proposal Processing . ... A Home-Grown But Widely-Distributed Data Analysis System (invited talk) . ... The Grid Signal Processing System . ... Experience with a Software Quality Process . ... The SRON-HeaD Data Analysis System . ... FADS II: The Future of Astronomical Data-analysis Systems BoF Session . ... IMAGER: A Parallel Interface to Spectral Line Processing . ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/toc.html -- 24.1 Кб -- 23.06.1998
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1519. The JCMT Telescope Management System
... Up: Real-Time Systems . ... At the JCMT we have successfully added important new features such as a Relational Database (the Telescope Management System-TMS), an online data Archive, and WWW based utilities to an, in part, 10-year old system. ... The real-time control system at the JCMT uses a VMS-based network where control of (and data from) the telescope is handled by a number of VAX computers. ... Figure: The JCMT Telescope Management System (UNIX). ... Figure: The JCMT Archive. ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/tilanusr.html -- 13.3 Кб -- 23.06.1998
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1520. Heuristic Estimates of Weighted Binomial Statistics for Use in Detecting Rare
... The standard science quicklook processing produces over a dozen sky maps at each downlink, and these maps are automatically searched for potential transient point sources. ... We have found that a heuristic modification of a formula derived by Li & Ma (1983) provides reasonably accurate estimates of p -values for point source detections even for very low p -value detections. ... Case 1u. The most straightforward approach uses the signal , where . ... To get a p -value, use . ...
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Ссылки http://www.adass.org/adass/proceedings/adass96/theilerj.html -- 14.9 Кб -- 23.06.1998
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