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. The EVRIS collaboration is composed of: G. Epstein, J.P. Michel, F. Rakotoarivelo, F. Roubaud and A. Mangeney Observatoire de Paris (DESPA) 92195 Meudon, France
A. Magnan, J.C. David
Laboratoire d'Astronomie Spatiale, BP8 - Traverse du Siphon, 13012 Marseille, France
J.T. Buey
Observatoire de Paris (DESPA) 92195 Meudon, France
Observatoire de Paris (DASGAL) 92195 Meudon, France
R. Bellenger
Département d'Astrophysique Extragalactique et de Cosmologie, Observatoire de Paris, France
M. Gelbmann, U. Heiter, F. Hiesberger, R. Kuschnig and E. Paunzen
Institut für Astronomie, Wien Austria
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References
Baglin, A.: 1991, Adv. Space Res. 11, 133.
Baglin, A., Weiss, W.W. and Bisnovatyi-Kogan, G.S.: 1993, IAU Colloquium 137, Weiss and Baglin eds., A.S. Conf. Ser. 40, 758.
Buey, J.T., Auvergne, M., Vuillemin, A. and Epstein, G.: 1997, 'Towards Asteroseismology from Space: The EVRIS Experiment. I. The Photometer: Description and Calibration', pasp Vol. 109, no 732, pp. 140-150.
Fröhlich C., Toutain T., Bonnet R.M., Bruns A.V., Delaboudinniere, J.P., Domingo V., Kotov V.A., Kolloth Z., Rachkovsky D.N., Vial, J.C., Wehrli C.: 1990, in G. Berthomieu and M. Cribier (eds.), Inside the Sun, Proc. IAU Colloquium 121.
Gelbmann, M., Hiesberger, F., Kuschnig, R., Paunzen, E., Weiss, W.W.: 1994a, 'Photometry of EVRIS target star fields', Communications in Asteroseismology No. 68.
Gelbdmann, M., Paunzen, E., Weiss, W.W.: 1994b, 'EVRIS photometry: simulation of satellite drift effects', Communications in Asteroseismology No. 73.
Greynolds, A. W.: 1980, 'Formulas for estimating stray-radiation levels in well-baffled optical systems', SPIE Vol. 257, pp. 39-48.
Gurin, L.S., Repin, S.V., Samoilova, Y.O.: 1992, Preprint IKI Pr-184.
Harvey, J. E.: 1976, 'Light Scattering of Optical Surfaces', Ph.D. University of Arizona.
Loomis, J.S.: 1992, 'Evaluation of optical aberrations in point images', ao Vol. 31, No 13, pp. 2211-2222.
Mahajan, V. N.:, 1983, 'Axial irradiance and optimum focusing of laser beams', ao Vol. 22, No 19, pp. 3042-3053.
Michel, E., Goupil, M.J., Baglin, A., Auvergne, M., Buey, J.T.: 1995, Proceedings of the Fourth SOHO Workshop: Helioseismology, Pacific Grove, ESA-SP 376, pp. 543.
Praderie, F., Mangeney, A., Lemaire, P., Puget, P. and Bisnovatyi-Kogan, G. S.: 1988, IAU Symp 123, 549, J. Christensen-Galsgard and S. Frandsen eds.
Toutain T. and Fröhlich C.: 1992, 'Characteristics of solar p-modes: results from IPHIR experiment', Astron. Astrophys., Vol. 257, pp. 287-297.
Trochyn, V. and Tynok, A.: 1991, communication at the CNES meeting held in Nice October 1992.
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Vuillemin, A., Tynok, A., Baglin, A. et al. Towards Asteroseismology from Space, the EVRIS experiment. Opto-mechanical characteristics and pointing performances of the EVRIS/PAIS complex. Experimental Astronomy 8, 257–279 (1998). https://doi.org/10.1023/A:1008001904313
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DOI: https://doi.org/10.1023/A:1008001904313