Location: Observatorio del Teide, Spain
Owner: Leibniz-Institut für Sonnenphysik (KIS)
GREGOR, operated by the Leibniz-Institut für Sonnenphysik (KIS) in partnership with the Leibniz-Institut für Astrophysik Potsdam (AIP) and the Max-Plank Institut für Sonnensystemforschung (MPS) (Germany), is Europe's largest solar telescope. It observes the Sun at visible and near-infrared wavelengths to collect data from the photosphere and the overlying chromosphere.
With an aperture of 1.5 meters, GREGOR measures magnetic fields and material motions with high precision and with a spatial resolution of about 50 km on the solar surface. Its excellent polarimetric sensitivity enables the measurement of magnetic field strengths down to a few Gauss.
GREGOR's optical laboratory was completely redesigned in 2020 to achieve a very high image quality and a modern instrument setup.
More info: http://www.leibniz-kis.de/en/observatories/gregor/
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