From Kiepenheuer Institute for Solar Physics: “New Solar Telescope GREGOR”


Kiepenheuer Institute for Solar Physics

KIP telescope GREGOR

First Results from the GREGOR Solar Telescope


GREGOR is Europe’s largest solar telescope and is a part of the Teide Observatory on Tenerife, on the Canary Islands, Spain. It observes the Sun at visible and near-infrared wavelengths to collect data from the photosphere and the overlying chromosphere. GREGOR measures magnetic field and material motion with high precision and with a spatial resolution of some 50 km on the solar surface.

The development of GREGOR started around the turn of the millennium and marked an important paradigm change. Since the 1970s, large solar telescopes were constructed as evacuated systems in order to eliminate internal seeing and to improve the imaging quality. With an aperture of 1.5 meters, an evacuated telescope with an entrance window was no longer an option, so GREGOR is an open telescope with active cooling of the primary mirror. A retractable dome allows flushing of the telescope with ambient air. Thanks to its mature adaptive optics and a suite of spectroscopic, polarimetric, and imaging instruments, it is now one of world’s most powerful solar telescopes.

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KIS operates the german solar telescopes at Teide Observatory on Tenerife (Spain)

The Kiepenheuer Institute for Solar Physics (KIS) conducts experimental and theoretical investigations of physical processes on and within the Sun. Its headquarter is in Freiburg, Germany. The KIS operates the german solar telescopes at Teide Observatory on Tenerife (Spain) where most of the scientific observations are performed. KIS offers lectures on astronomy and astrophysics at Freiburg university and trains young scientists.