Search: onr:"swepub:oai:lup.lub.lu.se:c0f25524-83ad-4394-bc57-517f86632a0e" >
Gaia : Focus, stray...
Gaia : Focus, straylight and basic angle
-
- Mora, A. (author)
- European Space Astronomy Centre
-
- Biermann, M. (author)
- Heidelberg University
-
- Bombrun, A. (author)
- European Space Astronomy Centre
-
show more...
-
- Boyadjian, J. (author)
- Airbus Defence and Space SAS
-
- Chassat, F. (author)
- Airbus Defence and Space SAS
-
- Corberand, P. (author)
- Airbus Defence and Space SAS
-
- Davidson, M. (author)
- Royal Observatory, Greenwich
-
- Doyle III, F (author)
- European Space Research and Technology Centre (ESA/ESTEC)
-
- Escolar, D. (author)
- European Space Research and Technology Centre (ESA/ESTEC)
-
- Gielesen, W. L. M. (author)
- Netherlands Organisation for Applied Scientific Research (Utrecht)
-
- Guilpain, T. (author)
- Airbus Defence and Space SAS
-
- Hernandez, J (author)
- European Space Astronomy Centre
-
- Kirschner, V. (author)
- European Space Research and Technology Centre (ESA/ESTEC)
-
- Klioner, S. A. (author)
- Dresden University of Technology
-
- Koeck, C. (author)
- Airbus Defence and Space SAS
-
- Laine, B. (author)
- European Space Research and Technology Centre (ESA/ESTEC)
-
- Lindegren, L. (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
-
- Serpell, E. (author)
- European Space Operations Centre
-
- Tatry, P. (author)
- Airbus Defence and Space SAS
-
- Thoral, P. (author)
- Airbus Defence and Space SAS
-
show less...
-
(creator_code:org_t)
- SPIE, 2016
- 2016
- English.
-
In: Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave. - : SPIE. - 9781510601871 ; 9904
- Related links:
-
http://dx.doi.org/10...
-
show more...
-
http://publications....
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- The Gaia all-sky astrometric survey is challenged by several issues affecting the spacecraft stability. Amongst them, we find the focus evolution, straylight and basic angle variations Contrary to pre-launch expectations, the image quality is continuously evolving, during commissioning and the nominal mission. Payload decontaminations and wavefront sensor assisted refocuses have been carried out to recover optimum performance. An ESA-Airbus DS working group analysed the straylight and basic angle issues and worked on a detailed root cause analysis. In parallel, the Gaia scientists have also analysed the data, most notably comparing the BAM signal to global astrometric solutions, with remarkable agreement. In this contribution, a status review of these issues will be provided, with emphasis on the mitigation schemes and the lessons learned for future space missions where extreme stability is a key requirement.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Astrometry
- Basic angle
- Focus
- Gaia
- Interferometry
- Stability
- Straylight
- Wavefront sensor
Publication and Content Type
- kon (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
-
Mora, A.
-
Biermann, M.
-
Bombrun, A.
-
Boyadjian, J.
-
Chassat, F.
-
Corberand, P.
-
show more...
-
Davidson, M.
-
Doyle III, F
-
Escolar, D.
-
Gielesen, W. L. ...
-
Guilpain, T.
-
Hernandez, J
-
Kirschner, V.
-
Klioner, S. A.
-
Koeck, C.
-
Laine, B.
-
Lindegren, L.
-
Serpell, E.
-
Tatry, P.
-
Thoral, P.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Astronomy Astrop ...
- Articles in the publication
-
Space Telescopes ...
- By the university
-
Lund University