GRIS is the spectrograph developed by IAC, installed in the German telescope GREGOR, in the Teide Observatory. It is dedicated to the research in solar spectropolarimetry. It is in continuous improvement, to expand its scientific capability and to demonstrate technologies for the EST.

TIP II is an improvement of the Tenerife Infrared polarimeter (TIP) built by the IAC for the VTT telescope in the Teide Observatory. TIP II includes a new detector, and new data acquisition and control systems. It is installed in the GREGOR telescope, ans is used with the GRIS spectrograph.