The staff at the ESO ARC provide support to the European users and to the science operations of the ALMA observatory. User support is provided together with the staff in the nodes within the European ...

alpha(2000) = 08h 43m 13.46s , delta(2000) = +03d 23' 55.1'' ...

alpha(2000) = 04h 50m 36.69s , delta(2000) = +08d 54' 00.7'' ...

What lies at the heart of our galaxy? For twenty years, ESO’s Very Large Telescope and the Keck telescopes have observed the centre of the Galaxy, looking at the motion of more than a hundred stars ...

Using ESO's Very Large Telescope (VLT), astronomers have found a unique disc of debris around the white dwarf J1328−1450 -- the dead core of a star similar to our Sun. The star is surrounded not by ...

EFOSC2, or the ESO Faint Object Spectrograph and Camera (v.2) to give its full name, is a very versatile instrument for low resolution spectroscopy and imaging. The instrument has multi mode ...

Further Tools can be found on the Science Users Information Tools and Services pages.

The Call for Proposals for the regular cycles is currently closed. You can no longer submit proposals for the regular cycles. The next call will be released in July 2027. For your convenience you can ...

MATISSE is a four-telescope beam combination instrument operating in the L (between 3.2 and 3.9 μm), M (between 4.5 and 5.0 μm), and N (between 8.0 and 13.0 μm) bands. It operates in a spectroimaging ...

HARPS is the ESO facility for the measurement of radial velocities with the highest accuracy currently available. It is fibre-fed by the Cassegrain focus of the 3.6m telescope in La Silla. The ...

MUSE is an Integral Field Spectrograph. It splits the field of view into 24 image segments or channels which are further sliced into 48 slices or mini slits, giving a total of 1152 mini slits. Each ...

The European Organisation for Astronomical Research in the Southern Hemisphere has as primary mission to build and operate state-of-the-art facilities for the advancement of astronomical research. The ...