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1281. The Client Server Design of the Gemini Data Handling System
Next: Interfacing with the Gemini Data Handling System . ... The Gemini Telescopes Data Handling System (DHS) developed by the Canadian Astronomy Data Centre (CADC) has diverse requirements to support the operation of the Gemini telescopes. ... The servers use a client server model to communicate between themselves and with other Gemini software systems. This paper describes the client server model of the Gemini Data Handling System. ... The reasons for designing the DHS as separate servers are: . ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/hillnr2/ -- 14.8 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/hillnr2/hillnr2.html -- 14.8 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/hillnr2/hillnr2.html -- 14.8 Кб -- 16.07.1999
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1282. CFITSIO, v2.0: A New Full-Featured Data Interface
... Version 2.0 of the CFITSIO subroutine interface for reading and writing FITS format data files is now available from the HEASARC web site. Some of the major new features in this version are the ability to read FITS files over the network, support for reading IRAF format images, and options for filtering the input file at run time. CFITSIO is a software library that contains both C and Fortran-callable interface routines for reading and writing data files in FITS format. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/pencewd/ -- 10.6 Кб -- 16.07.1999
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1283. Systemization and Use of Atomic Data for Astrophysical Modeling
... The growth of supercomputing capabilities over the past decade has led to tremendous opportunities to produce theoretical atomic data for use in modeling astrophysical plasmas; however, not all data are created equally. ... Systemization will enhance the value of atomic data for astrophysical modeling. ... Finally, the atomic database as well as models derived from spectral synthesis codes can be used directly in data analysis as table models. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/brickhousens/ -- 27.9 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/brickhousens/brickhousens.html -- 27.9 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/brickhousens/brickhousens.html -- 27.9 Кб -- 16.07.1999
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1284. Quadrant DC Offset Removal in NICMOS Images Using an Eye-pleasing Criterion
... This paper describes a simple technique that cancels the DC offsets often found in Hubble Space Telescope's calibrated NICMOS images. ... Hubble Space Telescope NICMOS images often show quadrants with a slight mismatch in DC offset levels after the calibration process. ... Figure 1: NICMOS image showing DC offsets between quadrants. ... Figure: Same image depicted in Fig. 1 after being processed by the DC offset removal algorithm. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/buskoic1/ -- 10.1 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/buskoic1/buskoic1.html -- 10.1 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/buskoic1/buskoic1.html -- 10.1 Кб -- 16.07.1999
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1285. A Java-IRAF Spectrum Visualization Tool
... A Java application designed to display spectra from Hubble Space Telescope's STIS instrument relies on a Java-IRAF interface to access the data in a efficient way. ... A simple spectrum visualization tool is being developed by the Science Software Group at the Space Telescope Science Institute (STScI), basically to evaluate the capabilities (and weaknesses) of Java as a possible environment for development of data visualization and analysis tools tailored to Hubble Space Telescope (HST) data. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/buskoic2/ -- 12.7 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/buskoic2/buskoic2.html -- 12.7 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/buskoic2/buskoic2.html -- 12.7 Кб -- 16.07.1999
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1286. An Application of XML and XLink Using a Graph-Partitioning Method and a Density
... The result is displayed on a density map similar to Kohonen Self-Organising Maps. ... Self-Organising Maps (SOM) displayed as density maps are more and more used as a convenient display solution for information retrieval. ... This is a typical ``knowledge discovery'' application, and it goes much further than what was previously possible with HTML: instead of comparing single words using their frequencies in the texts, it becomes possible to do complex numerical comparisons. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/guillaumedr/ -- 17.7 Кб -- 16.07.1999
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1287. The STScI HST Astrometry Pipeline
Next: An On-the-fly Calibration Pipeline for the HST WFPC-2 using OPUS . ... An Astrometry Data Processing Pipeline has been developed and deployed at the Space Telescope Science Institute (STScI). This pipeline is responsible for producing Hubble Space Telescope (HST) Astrometry Data Sets used to analyze astrometry observations and the operation of the HST Fine Guidance Sensors (FGS). ... This application is used in scenarios where complete astrometry data sets could not be produced. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/schultzjj/ -- 18.5 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/schultzjj/schultzjj.html -- 18.5 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/schultzjj/schultzjj.html -- 18.5 Кб -- 16.07.1999
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1288. The IUE High Dispersion Spectra Processing in IRAF
... The IUE high dispersion spectra available in NEWSIPS format of IUE final archive can not be directly analyzed in IRAF. ... We describe the process of obtaining the data, converting it to IRAF format, echelle orders merging, and continuum fitting up to the measurements of radial velocity of selected resonance lines. ... For that purpose the best way is taking the NEWSIPS absolutely calibrated data available as MXHI (high dispersion) and MXLO (low dispersion) files of IUE Final Archive. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/skodap/ -- 14.9 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/skodap/skodap.html -- 14.9 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/skodap/skodap.html -- 14.9 Кб -- 16.07.1999
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1289. Infrared Jitter Imaging Data Reduction: Algorithms and Implementation
... Jitter imaging (also known as microscanning ) is probably one of the most efficient ways to perform astronomical observations in the infrared. ... Several algorithms are described for each step, having in mind an automatic data processing in pipeline mode (i.e., without user interaction) as intended for the Very Large Telescope. ... Jitter imaging is an efficient method used in astronomical infrared observations to take care of sky background issues with a minimum loss of observing time. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/devillardn/ -- 16.4 Кб -- 16.07.1999
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1290. SAOTk: Tcl/Tk Widgets for Imaging and Data Visualization
... SAOTk is an integrated set of Tcl/Tk widgets for astronomical imaging and data visualization. ... In addition to ``classical'' support for imaging FITS data, manipulating colormaps, region marking, and coordinate readout (including WCS), SAOTk widgets also support arbitrary image scaling and rotation, advanced printing and graphics, image mosaics, and shared memory. ... We therefore have developed SAOTk , an integrated set of Tcl/Tk widgets for astronomical imaging and data visualization. ... Image ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/joyew/ -- 16.8 Кб -- 16.07.1999
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1291. Web-Based Tools For Exploration of ADC Data Holdings and NASA Data Archives
... Up: Archiving and Information Services . ... The NASA Astrophysics Data Facility has developed several new tools to facilitate the browsing and visualization of astronomical catalog and journal table data at the Astronomical Data Center (ADC), and to find associated observational data at various data archives. ... IMPReSS is a tool that displays aperture silhouettes within a specified sky region of a variety of space-based missions, and then links directly to the archived data held at external sites...
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Ссылки http://www.adass.org/adass/proceedings/adass98/kargatisve/ -- 13.4 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/kargatisve/kargatisve.html -- 13.4 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/kargatisve/kargatisve.html -- 13.4 Кб -- 16.07.1999
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1292. Python in Astronomy
Next: PyFITS, a FITS Module for Python . ... Pirzkal, N. & Hook, R. N. 1999, in ASP Conf. ... Python is a powerful, object-oriented scripting language that is easy to extend, free, and available for most computer platforms. Python, together with its Numerical module, and with the pFitsio module that is being developed by one of the authors, provides an attractive alternative to other languages such as Perl, IDL, and the IRAF CL, which are already widely used by the community. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/pirzkaln/ -- 10.1 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/pirzkaln/pirzkaln.html -- 10.1 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/pirzkaln/pirzkaln.html -- 10.1 Кб -- 16.07.1999
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1293. A Program Complex Equipped With a GUI for Investigation of 3D Structure of
... A program packet is developed for the detailed research into the 3D structure of the magnetic fields of solar active regions as well as the overall solar magnetic field. ... Solar activity is the result of motion and interaction of the coronal magnetic fields, so their study is of primary interest of solar physicists. We have developed a program packet for the detailed research into the 3D structure of the magnetic fields of solar active regions as well as the overall solar magnetic field. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/rudenkogv/ -- 15.8 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/rudenkogv/rudenkogv.html -- 15.8 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/rudenkogv/rudenkogv.html -- 15.8 Кб -- 16.07.1999
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1294. A Scheme for Compressing Floating-Point Images
Next: Adaptive, Lossless Compression of 2-D Astronomical Images . ... While many techniques have been used to compress integer data, compressing floating-point data presents a number of additional problems. We have implemented a scheme for compressing floating-point images that is fast, robust, and automatic, that allows random access to pixels without decompressing the whole image, and that generally has a scientifically negligible effect on the noise present in the image. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/whiterl/ -- 16.4 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/whiterl/whiterl.html -- 16.4 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/whiterl/whiterl.html -- 16.4 Кб -- 16.07.1999
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1295. Modern CCD Observations of Moving Celestial Objects: Algorithms and Software
... Up: Data Analysis and Processing Techniques . ... Also, a method for quality control of CCD observations is suggested. ... Everyone who observes a celestial object using a CCD detects moving celestial objects as a ``by product''. ... We hope that our investigations may be useful for near-Earth space control and also for searches of the moving celestial objects through analysis of old and new CCD frames obtained at any amateur or professional astronomical observatory. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/bykovo/ -- 12.3 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/bykovo/bykovo.html -- 12.3 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/bykovo/bykovo.html -- 12.3 Кб -- 16.07.1999
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1296. On The Fly Re-calibration of NICMOS and STIS Data
... Up: Data Pipelines . Previous: On-The-Fly Calibration at STScI . ... After an initial period during which the instrument in-flight responses were assessed and understood and the calibration software and data flow stabilised, the CADC and ST-ECF started working together on the extension of the on-the-fly (OTF) calibration pipeline to support NICMOS and STIS. ... Better (more recent) calibration files . ... The rule file (Table 1 ) is the key for the STIS and the NICMOS OTF calibration pipeline. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/micola/ -- 15.3 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/micola/micola.html -- 15.3 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/micola/micola.html -- 15.3 Кб -- 16.07.1999
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1297. WCSTools: An Image Astrometry Toolkit
... WCSTools provides programs and subroutines which allow both scientists and programmers to access astrometric information using the world coordinate system (WCS) of an image. WCSTools programs translate between image and sky coordinates, list catalog stars in the area covered by an image, find stars in an image and list them with their sky positions, and fit a WCS by matching image objects to catalogs. ... The images of the Digitized Sky Survey also come with WCS information. ... 1997, in ASP Conf. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/minkdj/ -- 14.5 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/minkdj/minkdj.html -- 14.5 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/minkdj/minkdj.html -- 14.5 Кб -- 16.07.1999
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1298. Data Compression for NGST
Next: Cosmic Ray Rejection with NGST . Up: Data Compression . ... This imposes a slightly lossy compression, but the scaling can be adjusted so as to retain the desired number of noise bits. ... The first and more important compression ratio, 64:1 , is obtained after applying a cosmic ray rejection process and fitting 64 readouts into one single image (Offenberg et al. ... The Consultative Committee for Space Data Systems (CCSDS) recommends Rice for Lossless Data Compression. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/nieto-santistebanma/ -- 17.8 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/nieto-santistebanma/nieto-santistebanma.html -- 17.8 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/nieto-santistebanma/nieto-santistebanma.html -- 17.8 Кб -- 16.07.1999
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1299. References for Galaxy Clusters Database
... A bibliographic database will be constructed with the purpose to be a general tool for searching references for galaxy clusters. ... Clusters of galaxies are the largest gravitationally bound systems in the Universe. ... It is reasonable to test the basic concepts which will be incorporated in the database using A/ACO clusters of galaxies (Abell 1958; Abell, Corwin, & Olowin 1989). ... The first catalog of clusters of galaxies was published by Abell (1958) for and extended by Abell et al. (1989) for...
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Ссылки http://www.adass.org/adass/proceedings/adass98/valtchanovia2/ -- 14.8 Кб -- 16.07.1999
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1300. DASH - Distributed Analysis System Hierarchy
... Up: Data Analysis and Processing Techniques . ... DASH is a distributed data reduction and analysis system constructed on CORBA. ... DASH is an object-oriented data reduction and analysis system for 8.2-m SUBARU telescope at Hawaii. ... To satisfy these requirements, we adopt CORBA as a distributed object environment and construct a distributed data reduction and analysis system (Takata et al. ... There is a small subset of DASH in the observational system for data processing as a pipeline. ...
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Ссылки http://www.adass.org/adass/proceedings/adass98/yagim/ -- 14.2 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/yagim/yagim.html -- 14.2 Кб -- 16.07.1999
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/yagim/yagim.html -- 14.2 Кб -- 16.07.1999
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