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1121. Innovative Cosmic Ray Rejection in ISOCAM Data
... Previous: Cosmic Ray Rejection and Data Compression for NGST . ... Cosmic ray rejection (deglitching) is one of the challenging data analysis problems for ISOCAM, the infrared camera on board ESA's Infrared Space Observatory (ISO). ... field of application: . ... Figure 1: CAM survey data after multiresolution deglitching (left) and after sky-cube deglitching (right). field of application: . ... Figure 3: BISC deglitched CAM survey data with additional faint source processing. field of application: ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P2-51/ -- 13.1 Кб -- 11.10.2000
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P2-51/P2-51.html -- 13.1 Кб -- 11.10.2000
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P2-51/P2-51.html -- 13.1 Кб -- 11.10.2000
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1122. Cosmic Ray Rejection and Data Compression for NGST
Next: Innovative Cosmic Ray Rejection in ISOCAM Data . ... The final compression ratio is of order 4n (n is number of reads) for simulated data.This order of data compression is required to fit the NGST data into the anticipated downlink bandwidth. ... The cosmic rays in the raw image (or, equivalently, in a Fowler-sampled image) make long integration ( sec) undesirable with NGST. ... 1998, Cosmic Ray Rejection and Image Processing Aboard the Next Generation Space Telescope, NGST Workshop (in press). ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P2-40/ -- 16.4 Кб -- 11.10.2000
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P2-40/P2-40.html -- 16.4 Кб -- 11.10.2000
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1123. The Removal of Periodic Read-Out Patterns from Science Frames
... Previous: Residual Bias Removal in HST NICMOS Images . ... Bias frames taken with CCDs should be homogeneous in intensity. ... Using a large number of bias frames obtained in one specific run, the time-dependent pattern was found to be built up of a fixed one-dimensional periodic function whose phase-shift varies from row to row. It was successfully removed from calibration and science frames through the use of pre- and upscan ``bias'' pixels available in each of these frames. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P2-15/ -- 12.8 Кб -- 11.10.2000
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P2-15/P2-15.html -- 12.8 Кб -- 11.10.2000
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1124. Residual Bias Removal in HST NICMOS Images
... Up: Data and Image Processing . ... Software tools have been developed to allow observers to examine and correct NICMOS images for the presence of residual bias signal. ... This has the effect of leaving a residual bias signal in the data after subtraction of the first image in a set of non-destructive readouts that comprise a typical NICMOS exposure (known as a ``Multiaccum'' exposure). ... The presence of this residual bias signal has several deleterious effects on the data. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P2-14/ -- 14.8 Кб -- 11.10.2000
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1125. Dithering, Sampling and Image Reconstruction
Next: Residual Bias Removal in HST NICMOS Images . Up: Data and Image Processing . ... Such dithering offers many advantages, particularly for the case in which the original detector pixels are too large to adequately sample the point-spread function of the image falling on them, but can pose a difficult image combination problem. ... The desire to fully exploit this data has led to considerable interest in methods for the reconstruction of optimal combinations from dithered undersampled images. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/O6-02/ -- 30.8 Кб -- 11.10.2000
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1126. Recent Developments to the AST Astrometry Library
... Previous: The ACSIS Data Reduction System . ... The AST library supports the attachment of astrometric calibrations to astronomical datasets, the processing of this information, and generation of associated graphical output. ... In this paper we outline some more recent developments and applications, which include a set of efficient data re-gridding algorithms for curvilinear coordinate systems, improved FITS support, user-defined coordinate transformations, and pin-cushion/barrel distortion. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P2-45/ -- 12.6 Кб -- 11.10.2000
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P2-45/P2-45.html -- 12.6 Кб -- 11.10.2000
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P2-45/P2-45.html -- 12.6 Кб -- 11.10.2000
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1127. DISH: The Single Dish Environment in AIPS++
... Previous: SDImager: An Imaging Tool for Single Dish Observations in AIPS++ . ... We present a short description and update of the single dish analysis environment in AIPS++, called DISH. ... DISH and AIPS++ are the primary analysis tools for data from the Green Bank Telescope and are also in use at several other observatories. ... DISH is a collection of Glish scripts and clients which provide an environment within AIPS++ intended to be used for single dish radioastronomy data analysis. ... Data...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P2-34/ -- 13.0 Кб -- 11.10.2000
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1128. SDImager: An Imaging Tool for Single Dish Observations in AIPS++
Next: DISH : The Single Dish Environment in AIPS++ . ... We present the SDImager tool which is designed to be the single dish imaging component of DISH in AIPS++. ... Recent work has concentrated on developing an imaging tool for single dish on-the-fly (OTF) observations using the same imaging class library as used for synthesis imaging in AIPS++. ... The initial single dish imaging tool in AIPS++ provides a few tools to examine and image these types of observations. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P2-33/ -- 9.4 Кб -- 11.10.2000
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1129. I/O Performance of AIPS++
... We report on a collaborative project to investigate the input/output (I/O) performance of the AIPS++ system with particular emphasis on the the I/O characteristics of our parallel, MPI-based application pimager . ... The Pablo group has developed an I/O and event tracing library that records the counts and timing of I/O calls in an application program, as well as tools to analyze the output trace records. ... Scalable parallel file systems, . ... Duration of the event, . ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P2-25/ -- 13.4 Кб -- 11.10.2000
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P2-25/P2-25.html -- 13.4 Кб -- 11.10.2000
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1130. Development of a Java-based Quicklook Image Browser for Echelle Spectrograph
... Previous: New Image Quick-Look System for Subaru Telescope Data Archive . ... We have developed a quick and easy data evaluation system for use with the observations of the Subaru telescope High Dispersion Spectrograph (HDS). The system, named OZEKI/B, is based on a general purpose image browser, NAOimage, which is a newly developed core system utility. ... For these purposes, using Java we have developed a new image browser, OZEKI/B, that provides an efficient quicklook of echelle images. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P1-38/ -- 14.1 Кб -- 11.10.2000
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P1-38/P1-38.html -- 14.1 Кб -- 11.10.2000
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P1-38/P1-38.html -- 14.1 Кб -- 11.10.2000
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1131. New Image Quick-Look System for Subaru Telescope Data Archive
... We present an image quick-look system adopted for the Subaru telescope data archive system (STARS) . The quick-look image is based on a data format which is defined within the FITS framework and enables us to store several pieces of information derived from the original (raw) image together with the compressed image. ... To solve this problem, STARS (the Subaru Telescope data Archive System) (Takata et al. 2000) has implemented a new quick-look system. ... I: Image . ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P1-37/ -- 15.1 Кб -- 11.10.2000
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P1-37/P1-37.html -- 15.1 Кб -- 11.10.2000
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P1-37/P1-37.html -- 15.1 Кб -- 11.10.2000
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1132. The Data Inspector: Data Visualization for the Chandra Monitoring Project
... Early on in support of the development of the monitoring system for the Chandra X-ray Observatory (CXO) we discovered the need for a very general, very flexible system to visualize data products. ... The DI is a package of procedures designed to create a generalized multi-purpose data analysis and visualization toolkit focused around Chandra requirements. We will discuss the DI package and the functionalities provided within to meet the Monitoring and Trends Analysis project requirements. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P2-48/ -- 13.8 Кб -- 11.10.2000
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P2-48/P2-48.html -- 13.8 Кб -- 11.10.2000
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P2-48/P2-48.html -- 13.8 Кб -- 11.10.2000
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1133. Data Quality Control at the Very Large Telescope
... Up: Data Pipelines and Quality Control . ... The Quality Control system is needed to cope with the the large data volumes produced by VLT observations, the geographical distribution of data handling, and the parallelism of observations performed with the different VLT unit telescopes and instruments. The Quality Control system includes three main components: the calibration database is a distributed system for collecting and processing pipeline calibration data before storage in the VLT Archive. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P2-17/ -- 14.4 Кб -- 11.10.2000
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1134. The Chandra Xray Center Data Archive Interfaces
... The Chandra data archive at the Chandra Xray Center supports automatic pipeline processing via exchange of data and other information. ... The Chandra Xray Center (CXC) receives large amounts of data in the form of data files daily. ... Automatic processing (AP) uses the arc4gl client to make requests to the archive server for ingest and retrieval of data files. ... Automatic processing and CXC operators communicate data transfer requests through the arc4gl/archive server interface. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P3-06/ -- 13.0 Кб -- 11.10.2000
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P3-06/P3-06.html -- 13.0 Кб -- 11.10.2000
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P3-06/P3-06.html -- 13.0 Кб -- 11.10.2000
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1135. The Chandra Monitoring System
Next: The Chandra Xray Center Data Archive Interfaces . ... Previous: Observation Interval Determination for the Chandra X-ray Observatory . ... The Chandra Science Center (CXC) runs a monitoring and trends analysis program to maximize the science return from this mission. ... The goal of the Chandra X-Ray Center's Monitoring and Trends Analysis project (M&TA) is to maximize science return by keeping the science operations team (SOT) informed of the scientific performance of the spacecraft. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P2-60/ -- 17.4 Кб -- 11.10.2000
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P2-60/P2-60.html -- 17.4 Кб -- 11.10.2000
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P2-60/P2-60.html -- 17.4 Кб -- 11.10.2000
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1136. Observation Interval Determination for the Chandra X-ray Observatory
... Connecting the planned observations and the actual status of the Chandra X-ray Observatory is the observation interval determination pipeline ( OBIDET ). This collection of tools allows the Chandra X-Ray Center Data System automated processing to process the data through the necessary pipelines based on what was actually observed. ... In the case of the Chandra X-ray Observatory, the observation interval determination pipeline ( OBIDET ) is used for this task. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P2-61/ -- 12.4 Кб -- 11.10.2000
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1137. A Pipeline for an Automatic Autonomous Observatory: Application to TAROT
... Up: Data Pipelines and Quality Control . ... We have developed a data processing pipeline for the automatic TAROT observatory. It is composed of a scheduler (MAJORDOME), a telescope control and a data processing software (TAITAR). ... Action Rapide pour les Objets Transitoires (TAROT, Bo?r et al. 1999), in operation at the Calern Observatory (France) has for primary objective the realtime detection of Cosmic Gamma-Ray Bursts (hereafter GRBs). ... Figure 1: Overview of the TAROT pipeline modules. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P3-08/ -- 13.2 Кб -- 11.10.2000
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1138. Implementation of the Advanced Camera for Surveys Calibration Pipeline
Next: Doing Theoretical Astrophysics With HST's Data Processing Pipeline Software: Can Your Pipeline Software Do That? ... The calibration pipeline for the Hubble Space Telescope's (HST's) Advanced Camera for Surveys (ACS), CALACS, was developed to efficiently process the large datasets generated by ACS. ... This pipeline processing requires that the data be processed quickly, not only placing restrictions on processing time for ACS data, but it also can't delay the processing of other observations. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P1-35/ -- 15.1 Кб -- 11.10.2000
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1139. The UCAC Astrometric Survey
... The USNO CCD Astrograph Catalog (UCAC) project is a high precision, astrometric survey. Observations started in January 1998 at Cerro Tololo (CTIO). ... The USNO CCD Astrograph Catalog (UCAC) project is a high precision, astrometric survey for the 7 16 magnitude range (in the 610/60 nm band), aiming at an accuracy of 20 mas for stars (Gauss et al. ... Table 1. ... A comparison of UCAC data with other catalogs (Figure 2) shows the large improvement in accuracy it the high star density region. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P1-07/ -- 15.7 Кб -- 10.10.2000
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P1-07/P1-07.html -- 15.7 Кб -- 10.10.2000
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P1-07/P1-07.html -- 15.7 Кб -- 10.10.2000
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1140. Infrared Surveys with CIRSI--Scientific Objectives and Data Analysis
... Up: Sky Surveys . ... 216, Astronomical Data Analysis Software and Systems IX, eds. N. Manset, C. Veillet, D. Crabtree (San Francisco: ASP), 423 . ... We report on the scientific progress on a wide field infrared survey being carried out at the 2.5m Isaac Newton Telescope with CIRSI, a unique infrared camera based on a mosaic of 4 1024 1024 HAWAII arrays. In normal operation the arrays are read out continuously with a sustained rate of two or more complete image datasets per minute. ...
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Ссылки http://www.adass.org/adass/proceedings/adass99/P1-03/ -- 15.0 Кб -- 10.10.2000
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P1-03/P1-03.html -- 15.0 Кб -- 10.10.2000
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[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass99/P1-03/P1-03.html -- 15.0 Кб -- 10.10.2000
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