World coordinate system keywords for FITS files from Lick Observatory
Identifieur interne : 000A32 ( Main/Exploration ); précédent : 000A31; suivant : 000A33World coordinate system keywords for FITS files from Lick Observatory
Auteurs : Steven L. Allen [États-Unis] ; John Gates [États-Unis] ; Robert I. Kibrick [États-Unis]Source :
- Proceedings of SPIE, the International Society for Optical Engineering [ 0277-786X ] ; 2010.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Every bit of metadata added at the time of acquisition increases the value of image data, facilitates automated processing of those data, and decreases the effort required during subsequent data curation activities. In 2002 the FITS community completed a standard for World Coordinate System (WCS) information which describes the celestial coordinates of pixels in astronomical image data. Most of the instruments in use at Lick Observatory and Keck Observatory predate this standard. None of them was designed to produce FITS files with celestial WCS information. We report on the status of WCS keywords in the FITS files of various astronomical detectors at Lick and Keck. These keywords combine the information from sources which include the telescope pointing system, the optics of the telescope and instrument, a description of the pixel layout of the detector focal plane, and the hardware and software mappings between the silicon pixels of the detector and the pixels in the data array of the FITS file. The existing WCS keywords include coordinates which refer to the detector structure itself (for locating defects and artifacts), but not celestial coordinates. We also present proof-of-concept from the first data acquisition system at Lick Observatory which inserts the WCS keywords for a celestial coordinate system.
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 000092
- to stream PascalFrancis, to step Curation: 000153
- to stream PascalFrancis, to step Checkpoint: 000036
- to stream Main, to step Merge: 000A35
- to stream Main, to step Curation: 000A32
Le document en format XML
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Hamilton, CA 95140</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Kibrick, Robert I" sort="Kibrick, Robert I" uniqKey="Kibrick R" first="Robert I." last="Kibrick">Robert I. Kibrick</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>UCO/Lick Observatory - ISB, 1156 High Street</s1><s2>Santa Cruz, CA 95064</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">11-0004584</idno><date when="2010">2010</date><idno type="stanalyst">PASCAL 11-0004584 INIST</idno><idno type="RBID">Pascal:11-0004584</idno><idno type="wicri:Area/PascalFrancis/Corpus">000092</idno><idno type="wicri:Area/PascalFrancis/Curation">000153</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000036</idno><idno type="wicri:doubleKey">0277-786X:2010:Allen S:world:coordinate:system</idno><idno type="wicri:Area/Main/Merge">000A35</idno><idno type="wicri:Area/Main/Curation">000A32</idno><idno type="wicri:Area/Main/Exploration">000A32</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">World coordinate system keywords for FITS files from Lick Observatory</title><author><name sortKey="Allen, Steven L" sort="Allen, Steven L" uniqKey="Allen S" first="Steven L." last="Allen">Steven L. Allen</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>UCO/Lick Observatory - ISB, 1156 High Street</s1><s2>Santa Cruz, CA 95064</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Gates, John" sort="Gates, John" uniqKey="Gates J" first="John" last="Gates">John Gates</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Lick Observatory, P.O. Box 14</s1><s2>Mt. Hamilton, CA 95140</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Kibrick, Robert I" sort="Kibrick, Robert I" uniqKey="Kibrick R" first="Robert I." last="Kibrick">Robert I. Kibrick</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>UCO/Lick Observatory - ISB, 1156 High Street</s1><s2>Santa Cruz, CA 95064</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Proceedings of SPIE, the International Society for Optical Engineering</title><title level="j" type="abbreviated">Proc. SPIE Int. Soc. Opt. Eng.</title><idno type="ISSN">0277-786X</idno><imprint><date when="2010">2010</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Proceedings of SPIE, the International Society for Optical Engineering</title><title level="j" type="abbreviated">Proc. SPIE Int. Soc. Opt. Eng.</title><idno type="ISSN">0277-786X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Artefact</term><term>Astrophysics</term><term>Automatic processing</term><term>Coordinate system</term><term>Data acquisition system</term><term>Data processing</term><term>Defect</term><term>Focal plane</term><term>Image databank</term><term>Information source</term><term>Information system</term><term>Keyword</term><term>Localization</term><term>Metadata</term><term>Telescope</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Métadonnée</term><term>Banque image</term><term>Traitement donnée</term><term>Traitement automatique</term><term>Système information</term><term>Source information</term><term>Localisation</term><term>Système acquisition donnée</term><term>Mot clé</term><term>Astrophysique</term><term>Télescope</term><term>Plan focal</term><term>Défaut</term><term>Système coordonnée</term><term>Artefact</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Every bit of metadata added at the time of acquisition increases the value of image data, facilitates automated processing of those data, and decreases the effort required during subsequent data curation activities. In 2002 the FITS community completed a standard for World Coordinate System (WCS) information which describes the celestial coordinates of pixels in astronomical image data. Most of the instruments in use at Lick Observatory and Keck Observatory predate this standard. None of them was designed to produce FITS files with celestial WCS information. We report on the status of WCS keywords in the FITS files of various astronomical detectors at Lick and Keck. These keywords combine the information from sources which include the telescope pointing system, the optics of the telescope and instrument, a description of the pixel layout of the detector focal plane, and the hardware and software mappings between the silicon pixels of the detector and the pixels in the data array of the FITS file. The existing WCS keywords include coordinates which refer to the detector structure itself (for locating defects and artifacts), but not celestial coordinates. We also present proof-of-concept from the first data acquisition system at Lick Observatory which inserts the WCS keywords for a celestial coordinate system.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Californie</li></region></list><tree><country name="États-Unis"><region name="Californie"><name sortKey="Allen, Steven L" sort="Allen, Steven L" uniqKey="Allen S" first="Steven L." last="Allen">Steven L. Allen</name></region><name sortKey="Gates, John" sort="Gates, John" uniqKey="Gates J" first="John" last="Gates">John Gates</name><name sortKey="Kibrick, Robert I" sort="Kibrick, Robert I" uniqKey="Kibrick R" first="Robert I." last="Kibrick">Robert I. Kibrick</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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