The interaction between pointing and active optics on the VISTA telescope
Identifieur interne : 000A42 ( Main/Exploration ); précédent : 000A41; suivant : 000A43The interaction between pointing and active optics on the VISTA telescope
Auteurs : D. L. Terrett [Royaume-Uni] ; William J. Sutherland [Royaume-Uni]Source :
- Proceedings of SPIE, the International Society for Optical Engineering [ 0277-786X ] ; 2010.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
The VISTA telescope has a field of view of 45 arc minutes radius and an f/1 primary mirror and so, in order to meet the image quality requirements at the edge of the field, the position of M2 has to be actively controlled in all 5 axes (focus, centring and tilt). Tilting M2 not only affects the image quality, it also shifts the image in the focal plane which introduces an interaction between the active optics and the telescope pointing. VISTA uses the VLT control system and the M2 hexapod does not allow movements of M2 and the telescope to be coordinated well enough for M2 to be tilted while a science exposure is in progress without introducing unacceptable image motion. Therefore, application of tilts requested by the active optics system have to be coordinated with the activity of the infra-red camera. This paper describes how the active optics system measures M2 tilt corrections and how the application of these tilts to the mirror and the compensating adjustments the telescope pointing are integrated with the operation of the telescope and camera in order to deliver the best possible image quality without reducing the survey efficiency.
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 000045
- to stream PascalFrancis, to step Curation: 000200
- to stream PascalFrancis, to step Checkpoint: 000046
- to stream Main, to step Merge: 000A45
- to stream Main, to step Curation: 000A42
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">The interaction between pointing and active optics on the VISTA telescope</title><author><name sortKey="Terrett, D L" sort="Terrett, D L" uniqKey="Terrett D" first="D. L." last="Terrett">D. L. Terrett</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Space Science Department, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus</s1><s2>Didcot, Oxfordshire OX11 OQX</s2><s3>GBR</s3><sZ>1 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Didcot, Oxfordshire OX11 OQX</wicri:noRegion></affiliation></author><author><name sortKey="Sutherland, William J" sort="Sutherland, William J" uniqKey="Sutherland W" first="William J." last="Sutherland">William J. Sutherland</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Astronomy Unit, Queen Mary, University of London, Mile End Road</s1><s2>London E1 4NS</s2><s3>GBR</s3><sZ>2 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>London E1 4NS</wicri:noRegion><orgName type="university">Université de Londres</orgName><placeName><settlement type="city">Londres</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Grand Londres</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">11-0070248</idno><date when="2010">2010</date><idno type="stanalyst">PASCAL 11-0070248 INIST</idno><idno type="RBID">Pascal:11-0070248</idno><idno type="wicri:Area/PascalFrancis/Corpus">000045</idno><idno type="wicri:Area/PascalFrancis/Curation">000200</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000046</idno><idno type="wicri:doubleKey">0277-786X:2010:Terrett D:the:interaction:between</idno><idno type="wicri:Area/Main/Merge">000A45</idno><idno type="wicri:Area/Main/Curation">000A42</idno><idno type="wicri:Area/Main/Exploration">000A42</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">The interaction between pointing and active optics on the VISTA telescope</title><author><name sortKey="Terrett, D L" sort="Terrett, D L" uniqKey="Terrett D" first="D. L." last="Terrett">D. L. Terrett</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Space Science Department, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus</s1><s2>Didcot, Oxfordshire OX11 OQX</s2><s3>GBR</s3><sZ>1 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Didcot, Oxfordshire OX11 OQX</wicri:noRegion></affiliation></author><author><name sortKey="Sutherland, William J" sort="Sutherland, William J" uniqKey="Sutherland W" first="William J." last="Sutherland">William J. Sutherland</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Astronomy Unit, Queen Mary, University of London, Mile End Road</s1><s2>London E1 4NS</s2><s3>GBR</s3><sZ>2 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>London E1 4NS</wicri:noRegion><orgName type="university">Université de Londres</orgName><placeName><settlement type="city">Londres</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Grand Londres</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>Active system</term><term>Adaptive optics</term><term>Adjustments</term><term>Coordination</term><term>Five axis machine</term><term>Focal planes</term><term>Image quality</term><term>Inclination</term><term>Linkage mechanism</term><term>Mirrors</term><term>Optical systems</term><term>Parallel mechanism</term><term>Telescopes</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Optique adaptative</term><term>Qualité image</term><term>Coordination</term><term>Système actif</term><term>Miroir</term><term>Plan focal</term><term>Télescope</term><term>Machine 5 axes</term><term>Angle inclinaison</term><term>Mécanisme articulé</term><term>Mécanisme parallèle</term><term>Réglage</term><term>Système optique</term><term>.</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The VISTA telescope has a field of view of 45 arc minutes radius and an f/1 primary mirror and so, in order to meet the image quality requirements at the edge of the field, the position of M2 has to be actively controlled in all 5 axes (focus, centring and tilt). Tilting M2 not only affects the image quality, it also shifts the image in the focal plane which introduces an interaction between the active optics and the telescope pointing. VISTA uses the VLT control system and the M2 hexapod does not allow movements of M2 and the telescope to be coordinated well enough for M2 to be tilted while a science exposure is in progress without introducing unacceptable image motion. Therefore, application of tilts requested by the active optics system have to be coordinated with the activity of the infra-red camera. This paper describes how the active optics system measures M2 tilt corrections and how the application of these tilts to the mirror and the compensating adjustments the telescope pointing are integrated with the operation of the telescope and camera in order to deliver the best possible image quality without reducing the survey efficiency.</div></front></TEI><affiliations><list><country><li>Royaume-Uni</li></country><region><li>Angleterre</li><li>Grand Londres</li></region><settlement><li>Londres</li></settlement><orgName><li>Université de Londres</li></orgName></list><tree><country name="Royaume-Uni"><noRegion><name sortKey="Terrett, D L" sort="Terrett, D L" uniqKey="Terrett D" first="D. L." last="Terrett">D. L. Terrett</name></noRegion><name sortKey="Sutherland, William J" sort="Sutherland, William J" uniqKey="Sutherland W" first="William J." last="Sutherland">William J. Sutherland</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Ticri/CIDE/explor/CyberinfraV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000A42 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000A42 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Ticri/CIDE
|area= CyberinfraV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= Pascal:11-0070248
|texte= The interaction between pointing and active optics on the VISTA telescope
}}
| This area was generated with Dilib version V0.6.25. |  |