The DOT top is constructed with very stiff supports capable of carrying large weight. The resulting DOT aperture (shadow of the on-axis tube and support beams...

The European Solar Telescope (EST) is a next generation large-aperture solar telescope. This 4-metre telescope will be optimised for studies of the magnetic...

The Global Oscillation Network Group, or GONG Network is a worldwide network of six identical telescopes, designed to have 24/7 observations of the Sun. The...

GRIS (GREGOR Infrared Spectrograph), the grating spectrograph is installed in the 1.5-meter GREGOR telescope located at the Observatorio del Teide in Tenerife...

The 1.5 m solar telescope GREGOR was built at the Observatorio del Teide by a German consortium led by the Kiepenheuer-Institut für Sonnenphysik, with the...

The Swedish 1-m Solar Telescope (SST) is the largest solar telescope in Europe and number one in the world when it comes to high spatial resolution. In its...

Modified Michelson interferometer (Fourier Tachometer) providing high resolution solar images of intensity, radial velocity and magnetograms at Niquel NI 676.8...

THEMIS is a joint operation from France (CNRS/INSU) and and Italy (INAF) national research agencies. It is located at Izaña, 2400 m, within the Teide...

The VTT and the GREGOR are operated by four German institutes: the Astrophysikalisches Institut Potsdam, the Kiepenheuer-Institut für Sonnenphysik (Freiburg...