Towards asteroseismology from space, the EVRIS experiment. Opto-mechanical characteristics and pointing performances of the EVRIS/PAIS complex
- Author(s)
- A Vuillemin, A Tynok, Annie Baglin, Werner Wolfgang Weiss, Michel Auvergne, S Repin, G Bisnovatyi-Kogan
- Abstract
EVRIS is the first space experiment dedicated to asteroseismology. It is designed to measure the relative time variations of the flux of several bright stars and to detect their modes of pulsation. As the amplitudes of these oscillations should be very small (a few ppm), the instrument has to perform relative photometry with an extremely high accuracy, i.e. hundred times better than the classical accuracy reached from the ground. The experiment is composed of a star tracker and a photometer, mounted on a pointing platform PAIS. This paper describes the mechanical and optical design and the performance of EVRIS, as well as the properties of the pointing system. It is shown that the EVRIS/PAIS complex meets the scientific specifications for a list of targets well suited for asteroseismology.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Laboratoire d'Astronomie Spatiale, Université de recherche Paris Sciences et Lettres, Institut Kosmicheskyi Isledovanie (IKI), Independent researcher
- Journal
- Experimental Astronomy
- Volume
- 8
- Pages
- 257-279
- No. of pages
- 23
- ISSN
- 0922-6435
- DOI
- https://doi.org/10.1023/A:1008001904313
- Publication date
- 1998
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/42722e27-e209-4ad0-9a3b-335a58554e63