Bibcode
Balthasar, H.; Bello González, N.; Collados, M.; Denker, C.; Feller, A.; Hofmann, A.; Lagg, A.; Nagaruju, L.; Puschmann, K. G.; Soltau, D.; Volkmer, R.
Referencia bibliográfica
Solar Polarization 6. Proceedings of a conference held in Maui, Hawaii, USA on May 30 to June 4, 2010. Edited by J. R. Kuhn, D. M. Harrington, H. Lin, S. V. Berdyugina, J. Trujillo-Bueno, S. L. Keil, and T. Rimmele. San Francisco: Astronomical Society of the Pacific, 2011., p.351
Advertised on:
4
2011
Número de citas
12
Número de citas referidas
8
Descripción
A brief description of the new 1.5-meter solar telescope GREGOR located
at the Observatorio del Teide in Tenerife will be given. GREGOR will
provide a spatial resolution of about 75 km on the Sun, and with its
light collecting capability we will be able to study the development of
small magnetic features with high cadence. From the beginning, it will
be equipped with the GREGOR Fabry-Pérot Interferometer (GFPI) for
the visible spectral range and with a GRating Infrared Spectrograph
(GRIS). Both postfocus instruments can be combined with a polarimeter,
and in both cases the light is modulated by two ferro-electric liquid
crystals. A calibration unit can be inserted to determine the
instrumental polarization. Because of the altazimuthal mount,
time-dependent rotation of the polarimetric reference plane is
introduced, and we have to develop a polarization model of the
telescope. Measurements to verify this model are in preparation.