Site-seeing measurements for the European Solar Telescope

Th. Berkefeld; F. Bettonvil; M. Collados; R. López; Y. Martín; J. Peñate; A. Pérez; G. B. Scharmer; G. Sliepen; D. Soltau; T. A. Waldmann; T. van Werkhoven

doi:10.1117/12.857025

5 August 2010 Site-seeing measurements for the European Solar Telescope

Th. Berkefeld, F. Bettonvil, M. Collados, R. López, Y. Martín, J. Peñate, A. Pérez, G. B. Scharmer, G. Sliepen, D. Soltau, T. A. Waldmann, T. van Werkhoven

Author Affiliations +

Proceedings Volume 7733, Ground-based and Airborne Telescopes III; 77334I (2010) https://doi.org/10.1117/12.857025
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

Seeing measurements are crucial for the optimum design of (multi-conjugate) adaptive optics systems operating at solar telescopes. For the design study of the 4-meter European Solar Telescope, to be located in the Canary Islands, several instruments have been constructed and operated, at the Observatorio del Roque de los Muchachos (La Palma) and at the Observatorio del Teide (Tenerife), to measure the properties of the ground layer and medium-high altitude turbulence. Several units of short (42.34 cm) and two long (323.06 cm) scintillometer bars are, or are to be, installed at both observatories. In addition to them, two wide-field wavefront sensors will be attached to the optical beams of the Swedish tower, on La Palma, and of the German VTT, on Tenerife, simultaneously used with the normal operation of the telescopes. These wavefront sensors are of Shack-Hartmann type with ~1 arcminute field of view. In this contribution, the instruments setup and their performance are described.

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Th. Berkefeld, F. Bettonvil, M. Collados, R. López, Y. Martín, J. Peñate, A. Pérez, G. B. Scharmer, G. Sliepen, D. Soltau, T. A. Waldmann, and T. van Werkhoven "Site-seeing measurements for the European Solar Telescope", Proc. SPIE 7733, Ground-based and Airborne Telescopes III, 77334I (5 August 2010); https://doi.org/10.1117/12.857025

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