F. Bouchy
Research Subjects
F. Bouchy has a total of 1 co-authors. Here are the top co-authors by number of shared publications:
P. Connes
Service d'Aéronomie du CNRS, BP. 3, F-91371 Verrières-le-Buisson Cedex, France
1 shared publication
Latest Publications
- Open Access
- 15 April 1999
- Published by EDP Sciences in Astronomy and Astrophysics Supplement Series
- Vol. 136 (1) , 193-204
Autoguider locked on a fiber input for precision stellar radial velocities
Measurement of stellar radial velocities (RV) is one acknowledged approach for planetary-search and asteroseismology programs. We study the incomplete scrambling action of a fiber feeding a spectrograph, which leaves RV errors at a level of few m/s. Observations realised with the ELODIE fiber-fed crossed-dispersion spectrograph at the 193-cm telescope of Observatoire de Haute-Provence (OHP) are presented. A fiber-locked autoguider (called FLAG) has been specifically built to reduce the stellarbeam geometrical fluctuations within the spectrograph. With FLAG, the fiber-input plays the role of guiding detector. Automatic focusing is also accomplished by the system. The design and performance characteristics of the instrument tested at the 152-cm telescope of OHP are reviewed here.
- 15 April 1999
- Published by EDP Sciences in Astronomy and Astrophysics Supplement Series
- Vol. 136 (1) , 193-204
Open AccessAutoguider locked on a fiber input for precision stellar radial velocities
Measurement of stellar radial velocities (RV) is one acknowledged approach for planetary-search and asteroseismology programs. We study the incomplete scrambling action of a fiber feeding a spectrograph, which leaves RV errors at a level of few m/s. Observations realised with the ELODIE fiber-fed crossed-dispersion spectrograph at the 193-cm telescope of Observatoire de Haute-Provence (OHP) are presented. A fiber-locked autoguider (called FLAG) has been specifically built to reduce the stellarbeam geometrical fluctuations within the spectrograph. With FLAG, the fiber-input plays the role of guiding detector. Automatic focusing is also accomplished by the system. The design and performance characteristics of the instrument tested at the 152-cm telescope of OHP are reviewed here.