In cooperation with the Belgian University of Liège, it supports TRAPPIST, a 0.6-metre telescope specialized in observing comets and exoplanets.

Both telescopes (Euler and TRAPPIST) are located at ESO's La Silla Observatory in northern Chile.

[3] The Geneva Observatory also participates in the Next-Generation Transit Survey, an international collaboration with several Universities from the United Kingdom as well as from Chile and Germany.

Located at Paranal Observatory in Chile, the ground-based, robotic search facility for exoplanets began science operations in early 2015.

[4] In the past, the Geneva Observatory participated in assessing and rating Swiss timepiece movements for accuracy.