Selecting Pixels for Kepler Downlink
Identifieur interne : 000A67 ( Main/Exploration ); précédent : 000A66; suivant : 000A68Selecting Pixels for Kepler Downlink
Auteurs : Stephen T. Bryson [États-Unis] ; Jon M. Jenkins [États-Unis] ; Todd C. Klaus [États-Unis] ; Miles T. Cote [États-Unis] ; Elisa V. Quintana [États-Unis] ; Jennifer R. Hall [États-Unis] ; Khadeejah Ibrahim [États-Unis] ; Hema Chandrasekaran [États-Unis] ; Douglas A. Caldwell [États-Unis] ; Jeffrey E. Van Cleve [États-Unis] ; Michael R. Haas [États-Unis]Source :
- Proceedings of SPIE, the International Society for Optical Engineering [ 0277-786X ] ; 2010.
Descripteurs français
- Pascal (Inist)
English descriptors
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Abstract
The Kepler mission monitors ˜ 165, 000 stellar targets using 42 2200 x 1024 pixel CCDs. Onboard storage and bandwidth constraints prevent the storage and downlink of all 96 million pixels per 30-minute cadence, so the Kepler spacecraft downlinks a specified collection of pixels for each target. These pixels are selected by considering the object brightness, background and the signal-to-noise in each pixel, and maximizing the signal-to-noise ratio of the target. This paper describes pixel selection, creation of spacecraft apertures that efficiently capture selected pixels, and aperture assignment to a target. Engineering apertures, short-cadence targets and custom-specified shapes are discussed.
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Jenkins</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>SETI Institute/NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Klaus, Todd C" sort="Klaus, Todd C" uniqKey="Klaus T" first="Todd C." last="Klaus">Todd C. Klaus</name><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Orbital Sciences Corporation/NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>3 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Cote, Miles T" sort="Cote, Miles T" uniqKey="Cote M" first="Miles T." last="Cote">Miles T. 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Box 808, L-478</s1><s2>Livermore, CA-94551</s2><s3>USA</s3><sZ>8 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Caldwell, Douglas A" sort="Caldwell, Douglas A" uniqKey="Caldwell D" first="Douglas A." last="Caldwell">Douglas A. Caldwell</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>SETI Institute/NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Van Cleve, Jeffrey E" sort="Van Cleve, Jeffrey E" uniqKey="Van Cleve J" first="Jeffrey E." last="Van Cleve">Jeffrey E. Van Cleve</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>SETI Institute/NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Haas, Michael R" sort="Haas, Michael R" uniqKey="Haas M" first="Michael R." last="Haas">Michael R. 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Bryson</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Jenkins, Jon M" sort="Jenkins, Jon M" uniqKey="Jenkins J" first="Jon M." last="Jenkins">Jon M. Jenkins</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>SETI Institute/NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Klaus, Todd C" sort="Klaus, Todd C" uniqKey="Klaus T" first="Todd C." last="Klaus">Todd C. Klaus</name><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Orbital Sciences Corporation/NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>3 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Cote, Miles T" sort="Cote, Miles T" uniqKey="Cote M" first="Miles T." last="Cote">Miles T. Cote</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Quintana, Elisa V" sort="Quintana, Elisa V" uniqKey="Quintana E" first="Elisa V." last="Quintana">Elisa V. Quintana</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>SETI Institute/NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Hall, Jennifer R" sort="Hall, Jennifer R" uniqKey="Hall J" first="Jennifer R." last="Hall">Jennifer R. Hall</name><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Orbital Sciences Corporation/NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>3 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Ibrahim, Khadeejah" sort="Ibrahim, Khadeejah" uniqKey="Ibrahim K" first="Khadeejah" last="Ibrahim">Khadeejah Ibrahim</name><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Orbital Sciences Corporation/NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>3 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Chandrasekaran, Hema" sort="Chandrasekaran, Hema" uniqKey="Chandrasekaran H" first="Hema" last="Chandrasekaran">Hema Chandrasekaran</name><affiliation wicri:level="2"><inist:fA14 i1="04"><s1>Lawrence Livermore National Laboratory, P.O. Box 808, L-478</s1><s2>Livermore, CA-94551</s2><s3>USA</s3><sZ>8 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Caldwell, Douglas A" sort="Caldwell, Douglas A" uniqKey="Caldwell D" first="Douglas A." last="Caldwell">Douglas A. Caldwell</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>SETI Institute/NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Van Cleve, Jeffrey E" sort="Van Cleve, Jeffrey E" uniqKey="Van Cleve J" first="Jeffrey E." last="Van Cleve">Jeffrey E. Van Cleve</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>SETI Institute/NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Haas, Michael R" sort="Haas, Michael R" uniqKey="Haas M" first="Michael R." last="Haas">Michael R. Haas</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>NASA Ames Research Center, M/S 244-30</s1><s2>Moffett Field, CA 94305</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>11 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>Bandwidth</term><term>Brightness</term><term>Signal to noise ratio</term><term>Spacecraft</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Largeur bande</term><term>Spationef</term><term>Brillance</term><term>Rapport signal bruit</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The Kepler mission monitors ˜ 165, 000 stellar targets using 42 2200 x 1024 pixel CCDs. Onboard storage and bandwidth constraints prevent the storage and downlink of all 96 million pixels per 30-minute cadence, so the Kepler spacecraft downlinks a specified collection of pixels for each target. These pixels are selected by considering the object brightness, background and the signal-to-noise in each pixel, and maximizing the signal-to-noise ratio of the target. This paper describes pixel selection, creation of spacecraft apertures that efficiently capture selected pixels, and aperture assignment to a target. Engineering apertures, short-cadence targets and custom-specified shapes are discussed.</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="Bryson, Stephen T" sort="Bryson, Stephen T" uniqKey="Bryson S" first="Stephen T." last="Bryson">Stephen T. Bryson</name></region><name sortKey="Caldwell, Douglas A" sort="Caldwell, Douglas A" uniqKey="Caldwell D" first="Douglas A." last="Caldwell">Douglas A. Caldwell</name><name sortKey="Chandrasekaran, Hema" sort="Chandrasekaran, Hema" uniqKey="Chandrasekaran H" first="Hema" last="Chandrasekaran">Hema Chandrasekaran</name><name sortKey="Cote, Miles T" sort="Cote, Miles T" uniqKey="Cote M" first="Miles T." last="Cote">Miles T. Cote</name><name sortKey="Haas, Michael R" sort="Haas, Michael R" uniqKey="Haas M" first="Michael R." last="Haas">Michael R. Haas</name><name sortKey="Hall, Jennifer R" sort="Hall, Jennifer R" uniqKey="Hall J" first="Jennifer R." last="Hall">Jennifer R. Hall</name><name sortKey="Ibrahim, Khadeejah" sort="Ibrahim, Khadeejah" uniqKey="Ibrahim K" first="Khadeejah" last="Ibrahim">Khadeejah Ibrahim</name><name sortKey="Jenkins, Jon M" sort="Jenkins, Jon M" uniqKey="Jenkins J" first="Jon M." last="Jenkins">Jon M. Jenkins</name><name sortKey="Klaus, Todd C" sort="Klaus, Todd C" uniqKey="Klaus T" first="Todd C." last="Klaus">Todd C. Klaus</name><name sortKey="Quintana, Elisa V" sort="Quintana, Elisa V" uniqKey="Quintana E" first="Elisa V." last="Quintana">Elisa V. Quintana</name><name sortKey="Van Cleve, Jeffrey E" sort="Van Cleve, Jeffrey E" uniqKey="Van Cleve J" first="Jeffrey E." last="Van Cleve">Jeffrey E. Van Cleve</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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