TRAnsiting Planets and PlanetesImals Small Telescope–South

TRAPPIST–South (TRAnsiting Planets and PlanetesImals Small Telescope–South) is a 60 cm telescope at La Silla devoted to the study of planetary systems and it follows two approaches: the detection and characterisation of exoplanets around other stars and the study of comets orbiting around the Sun. The robotic telescope is operated from a control room in Liège, Belgium. The project is led by the Department of Astrophysics, Geophysics and Oceanography of the University of Liège, in close collaboration with the Geneva Observatory (Switzerland). TRAPPIST–South is mostly funded by the Belgian Fund for Scientific Research with the participation of the Swiss National Science Foundation.

The name TRAPPIST–South was given to the telescope to underline the Belgian origin of the project. Trappist beers are famous all around the world and most of them are Belgian.

Science goals

Search for exoplanets; comets; Trans-Neptunian Objects.


TRAnsiting Planets and PlanetesImals Small Telescope–South

Name: TRAnsiting Planets and PlanetesImals Small Telescope–South
Site: La Silla
Altitude: 2375 m
Enclosure: Classical dome
Type: Robotic optical telescope
Optical design: Lightweight Ritchey-Chrétien reflector
Diameter. Primary M1: 0.60 m
Material. Primary M1: Astro Sitall
Diameter. Secondary M2: 0.21 m
Material. Secondary M2: Astro Sitall
Diameter. Tertiary M3: None
Mount: German Equatorial mount
First Light date: 8 June 2010
Images taken with TRAPPIST–South: Link
Images of TRAPPIST–South: Link
Videos of TRAPPIST–South: Link
Press Releases with TRAPPIST–South: Link