Gregor@night: The future high-resolution stellar spectrograph for the GREGOR solar telescope

0388441 - ASÚ 2013 RIV DE eng J - Článek v odborném periodiku
Strassmeier, K.G. - Ilyin, I.V. - Woche, M. - Granzer, T. - Weber, M. - Weingrill, J. - Bauer, S.-M. - Popow, E. - Denker, C. - Schmidt, W. - von der Lühe, O. - Berdyugina, S. - Collados Vera, M. - Koubský, Pavel - Hackman, T. - Mantere, M.J.
Gregor@night: The future high-resolution stellar spectrograph for the GREGOR solar telescope.
Astronomische Nachrichten. Roč. 333, č. 9 (2012), s. 901-910. ISSN 0004-6337. E-ISSN 1521-3994
Institucionální podpora: RVO:67985815
Klíčová slova: spesctrographs * telescope
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika
Impakt faktor: 1.399, rok: 2012

We describe the future night-time spectrograph for the GREGOR solar telescope and present its science core projects. The spectrograph provides a 3-pixel resolution of up to R = 87 000 in 45 echelle orders covering the wavelength range 390-900 nm with three grating settings. An iodine cell can be used for high-precision radial velocity work in the 500-630 nm range. The operation of the spectrograph and the telescope will be fully automated without the presence of humans during night-time and will be based on the successful STELLA control system. Future upgrades include a second optical camera for even higher spectral resolution, a Stokes-V polarimeter and a link to the laser-frequency comb at the Vacuum Tower Telescope. The night-time core projects are a study of the angular-momentum evolution of The Sun in Time and a continuation of our long-term Doppler imaging of active stars.
Trvalý link: http://hdl.handle.net/11104/0217347