Bibcode
Volkmer, R.; von der Lühe, O.; Denker, C.; Solanki, S. K.; Balthasar, H.; Berkefeld, T.; Caligari, P.; Collados, M.; Fischer, A.; Halbgewachs, C.; Heidecke, F.; Hofmann, A.; Klvaňa, M.; Kneer, F.; Lagg, A.; Popow, E.; Schmidt, D.; Schmidt, W.; Sobotka, M.; Soltau, D.; Strassmeier, K. G.
Bibliographical reference
Astronomische Nachrichten, Vol.331, Issue 6, p.624
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6
2010
Citations
19
Refereed citations
13
Description
The integration and verification phase of the GREGOR telescope reached
an important milestone with the installation of the interim 1 m
SolarLite primary mirror. This was the first time that the entire light
path had seen sunlight. Since then extensive testing of the telescope
and its subsystems has been carried out. The integration and
verification phase will culminate with the delivery and installation of
the final 1.5 m Zerodur primary mirror in the summer of 2010.
Observatory level tests and science verification will commence in the
second half of 2010 and in 2011. This phase includes testing of the main
optics, adaptive optics, cooling and pointing systems. In addition,
assuming the viewpoint of a typical user, various observational modes of
the GREGOR Fabry-Pérot Interferometer (GFPI), the Grating
Infrared Spectrograph (GRIS), and high-speed camera systems will be
tested to evaluate if they match the expectations and science
requirements. This ensures that GREGOR will provide high-quality
observations with its combination of (multi-conjugate) adaptive optics
and advanced post-focus instruments. Routine observations are expected
for 2012.
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Solar and Stellar Magnetism
Magnetic fields are at the base of star formation and stellar structure and evolution. When stars are born, magnetic fields brake the rotation during the collapse of the mollecular cloud. In the end of the life of a star, magnetic fields can play a key role in the form of the strong winds that lead to the last stages of stellar evolution. During
Tobías
Felipe García