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961. An IRAF-Independent Interface for Spatial-Region Descriptors
... To move toward open analysis software, we plan to make the PROS regions subsystem available from processes outside of IRAF. We also plan to make the region descriptor parsing system available for purposes beyond the creation of masks, such as an interface to an image display program, accepting a region descriptor and generating commands to display the region on an image. ... Anticipating two kinds of new requirements, we reconsidered the design of the PROS region descriptor processing subsystem. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/schmidtd.html -- 11.4 Кб -- 03.11.2000
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962. FITS Checksum Verification in the NOAO Archive
... There is no standard procedure for verifying the integrity of FITS data files. ... A simple method for embedding an ASCII coded 32 bit 1's complement checksum within a FITS header (or any ASCII text) is described that is quick to compute and has desirable features such as: the checksum of each FITS file or extension is set to zero; the checksum may be accumulated in any order; and the checksum is easily updated with simple arithmetic. ... The checksum and its complement sum to zero. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/seamanr.html -- 13.5 Кб -- 03.11.2000
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963. Automated Spectral Reduction in the IRAF Fabry-Perot Package
... As introduced at ADASS I and II (Bland-Hawthorn, Shopbell, & Cecil 1992), a Fabry-Perot analysis package for IRAF is under development as a joint effort of ourselves and the IRAF group. In this paper, we describe an important component of the Fabry-Perot package, the fpplot task for spectral plotting and fitting. ... Automated techniques are essential for quantifying the thousands of spectra in a Fabry-Perot data cube for velocity and photometric studies. ... First there is the display of spectra. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/shopbellp.html -- 13.0 Кб -- 03.11.2000
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964. ADASS IV Subject Index
... ADS, see Astrophysics Data System . ... multiresolution, 260 , 268 , 279 . ... spectroscopy, 133 . ... IDL, 109 , 182 , 422 , 437 . IRAF, 89 , 121 , 207 , 225 , 305 , 402 , 410 , 414 , 418 , 422 , 497 . ... Miriad, 129 , 433 . ... ASC, 207 , 422 . ... AXAF , 207 , 357 , 361 , 422 . ... FITS, 129 , 191 , 203 , 207 , 211 , 219 , 229 , 233 , 237 , 241 , 245 , 247 , 367 , 383 , 437 . ... FITS data format, 129 , 191 , 207 , 211 , 219 , 229 , 233 , 241 , 245 , 247 , 367 , 383 . ... indexing, 52 , 55 . ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/sindex.html -- 47.7 Кб -- 03.11.2000
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965. Providing a Common GUI to Image Processing Tasks under PCIPS
... The PCIPS image processing system (Smirnov & Piskunov 1994) has been in development since 1991; the current version is 2.01. ... Key features of the system include: (1) an intuitive graphical user interface (GUI), (2) all functionality is provided by external application modules, which are easily added to the system as they are developed, (3) there is an application program interface (API) for development of custom applications, and (4) the code runs on practically any Intel-based PC. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/smirnovo1.html -- 12.3 Кб -- 03.11.2000
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966. Automated Globular Cluster Photometry with DASHA
... We describe a tool in the PCIPS environment for finishing the job of globular cluster photometry started by DAOPHOT II: starting with the instrumental magnitudes derived by DAOPHOT II, DASHA can automatically produce final color-magnitude diagrams. ... DASHA can automate the whole process of globular cluster photometry, from instrumental magnitude lists produced by DAOPHOT II, to final color-magnitude diagrams. ... DASHA is oriented towards star lists produced by DAOPHOT II as source data. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/smirnovo2.html -- 13.1 Кб -- 03.11.2000
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967. Multiresolution and Astronomical Image Processing
... J.-L. Starck . ... We present several wavelet transform algorithms and their applications in astronomical image processing (restoration, object detection, compression, etc.) ... The 2-dimensional extension of Mallat's algorithm leads to a wavelet transform with three wavelet functions (three wavelet coefficient sub-images at each scale). ... The wavelet transform, and more generally the multiresolution transform, provides a powerful and versatile framework for astronomical image processing. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/starckjl1.html -- 32.7 Кб -- 03.11.2000
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968. Astronomical Image Compression Using the Pyramidal Median Transform
... We describe image compression based on the pyramidal median transform, introduced as an alternative to the use of a wavelet transform. The use of a multiresolution support allows ``protection'' of astronomical objects in the image. ... We describe an approach to astronomical image compression through noise removal. ... We begin by explaining why transforms other than the wavelet transform are important for astronomical image compression. ... Negative Values. ... The image dimensions were . ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/starckjl2.html -- 11.4 Кб -- 03.11.2000
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969. Two Small Astronomical Catalogs Available In Hypertext
... The Third Catalog of Emission Line Stars (Herbig & Bell 1988) and the General Catalog of Herbig-Haro Objects (Reipurth 1994) have both been translated into hypertext and linked to other on-line material. ... In recent years astronomical catalogs have disappeared from the archival literature. ... This spring I received a request from Bo Reipurth of ESO to review his preliminary General Catalog of Herbig-Haro Objects (Reipurth 1994) before it was made available via anonymous FTP from the ESO FTP...
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Ссылки http://www.adass.org/adass/proceedings/adass94/stromk.html -- 14.3 Кб -- 03.11.2000
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970. Interfacing the Tk Toolkit to ADAM
... Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, U.K. This paper describes how Tcl and the Tk toolkit have been extended to send and receive Adam inter-task messages, and how it has been used to build graphically-oriented user interfaces for various data reduction tasks. ... The user interface uses the message system to control the task. ... adam_init . ... The user interface sends messages to the relay task using the Adam message system, which forwards them to the Adam tasks. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/terrettd.html -- 10.6 Кб -- 03.11.2000
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971. The Stellar Dynamics Toolbox NEMO
... Next: Data Reduction Software Up: Software Systems Previous: Interfacing the Tk . ... NEMO is a toolbox for users and programmers with which a wide range of experimental situations can be constructed, dynamically evolved, and analyzed. Primarily geared towards stellar dynamics, NEMO is by no means restricted to it. ... A general method for hierarchically structured binary data files is used to communicate between programs. ... To the user, NEMO appears as a collection of loosely coupled programs. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/teubenp.html -- 13.5 Кб -- 03.11.2000
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972. ADASS IV Electronic Proceedings
... Includes 140kB image.) ... Part 1: Education and Public Policy . Part 2: Network Information Systems . ... Part 4: Archives and Databases . Part 5: Data Models and Formats . ... Part 7: Image Restoration and Analysis . Part 8: Statistical Analysis . ... Part 11: Data Modeling and Analysis . ... Electronic colophon . ... Indexing and Searching Distributed Astronomical Data Archives . ... Data Archive System for Kiso Observatory and Okayama Astrophysical Observatory . ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/toc.html -- 24.7 Кб -- 03.11.2000
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973. A Portable GUI Development System---The IRAF Widget Server
... We describe a new GUI (Graphics User Interface) development environment which extends the X window system and the X Toolkit (Xt) with a high-level, object-oriented, interpreted programming language. ... The widget server serves up widgets to a remote client process in much the same way that the X display server serves up windows and other low-level display resources to a remote client application. When a client application starts up it connects to the widget server and downloads its GUI. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/todyd.html -- 31.5 Кб -- 03.11.2000
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974. User Interfaces to HST Data: StarView and the World Wide Web
... This paper describes two approaches for user interfaces to the Hubble Space Telescope ( HST ) archive. StarView is a custom interface with many interactive features for the serious archive user. An experimental World Wide Web (WWW) interface is also described, which supports some of the basic features of StarView available via standard WWW clients such as NCSA Mosaic. ... StarView is the primary user interface to the HST archive (Williams 1993; Long 1994). ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/travisanoj.html -- 11.8 Кб -- 03.11.2000
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975. Storing and Distributing GONG Data
... For example, the data product file catalog was compressed by a factor of over 160 to a series of bitmaps that permit the DSDS to provide good query response to several simultaneous users on a workstation. ... To solve these problems, the DSDS designers ``compressed'' the file catalog by defining a file for each data product containing a bit for each possible time slot over the three-year GONG project. A bit is set in the file if the library contains that time slot's data product file. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/truebloodm.html -- 15.7 Кб -- 03.11.2000
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976. The AstroVR Collaboratory, An On-line Multi-User Environment for Research in
... Xerox Palo Alto Research Center, 3333 Coyote Hill Rd., ... We describe our experiment with an on-line collaborative environment where users share the execution of programs and communicate via audio, video, and typed text. ... Our idea was to build a multi-user, network-accessible environment which we could populate with tools useful for astrophysics research. ... These client-server games were usually written by graduate and undergraduate students, and plain telnet was often the client. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/vanburend1.html -- 33.0 Кб -- 03.11.2000
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977. ISSA-PS, The Postage Stamp Server for IRAS Imaging Data
... The ISSA Postage Stamp Server is a Web-accessible service that delivers IRAS images to users with a minimum of effort. ... The basic idea of the ISSA Postage Stamp Server is to provide small subsets of the IRAS imaging data to users with minimal fuss and bother. ... Users retrieve the FITS images by clicking on the postage stamps, provided their Web clients are properly configured (we give instructions on how to do this). ... Users are, of course, free to do so at their end. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/vanburend2.html -- 7.6 Кб -- 03.11.2000
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978. Recreating Einstein Level One Processing Exposure Masks and Background Maps in
... This paper describes the main algorithms used by the Einstein Level One processing to create the exposure masks and the background maps for Einstein IPC images, and how these algorithms were recreated in the IRAF environment. Our goal was to recreate the algorithms used by the Level One Processing to create exposure masks and background maps for Einstein Image Proportional Counter (IPC) data (cf. sections 2.5 and 2.7 of Harnden et al. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/vanstoned.html -- 11.6 Кб -- 03.11.2000
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979. Data Reduction Software for SWAS
... In anticipation of its operation starting 1995, a set of software tools has been developed, mainly as a layered package in the IRAF environment, to allow efficient inspection, processing, archiving and retrieval of the scientific data. ... The SWAS Science Operation Center, established at the Harvard-Smithsonian Center for Astrophysics, is in charge of planning the scientific observations, preliminary calibration and analysis, and archiving all science data from the mission (see also Kleiner 1995) ....
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Ссылки http://www.adass.org/adass/proceedings/adass94/wangz.html -- 15.4 Кб -- 03.11.2000
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980. Visualization of GBT Geometry
... The Advanced Visual Systems (AVS) has been used to explore lines of sight through the complex geometry of the Green Bank Telescope (GBT). Perspective images computed by AVS from geometric descriptions of the components of the telescope have been used when selecting locations for the installation of laser rangefinders and when checking geometrical relationships along the optical path. ... The AVS ``camera'' could be commanded to look from any location in the scene toward any another location. ...
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Ссылки http://www.adass.org/adass/proceedings/adass94/wellsd.html -- 11.0 Кб -- 03.11.2000
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