CALAS: a CAmera for the LArge Scales of the solar surface
Abstract
Supergranulation is constituted of cells of horizontal outflows with a typical size of 30000 km at the surface of the Sun. The origin of this pattern (convection or not) is still controversial. Usually observed using Doppler shifts at the photospheric level, it can also be studied using horizontal motions of solar granules. A combination of a large field of view (containing as many supergranules as possible) and a high spatial resolution (to sample granules with a high accuracy, even the small ones) is then necessary to study this process in more details. Our project is to implement a large scale CMOS camera, CALAS (CAmera for the LArge Scales of the solar surface) at the Coupole Tourelle at the Pic du Midi. The field of view will be 10'x10', allowing to sample 100 hundred supergranules. We will present the scientific objectives and the organisation of our project.
- Publication:
-
SF2A-2003: Semaine de l'Astrophysique Francaise
- Pub Date:
- 2003
- Bibcode:
- 2003sf2a.conf...93M