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...

The different optical paths followed by the signals coming from a constellation of GNSS (Global Navigation satellite systems; GPS, Galileo, etc) satellites are...

The Gran Telescopio CANARIAS (GTC) is a 10,4 metres primary mirror reflecting telescope. It is designed to incorporate the most up-to-date technology and it is...

New telescope for detecting optical signatures of gravitational waves – built and operated by international researchers led by the University of Warwick -...

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 HERMES high-resolution spectrograph project aims at exploiting the specific potential of small but flexible telescopes in observational astrophysics. The...

HARPS-N is an echelle spectrograph covering the wavelength range between 383 to 693 nm, with a spectral resolution R=115000. This instrument allows the...