HARPS, the High Accuracy Radial velocity Planet Searcher at the ESO La Silla 3.6m telescope is dedicated to the discovery of extrasolar planets. It is a fibre-fed high resolution echelle spectrograph.

ESO operates two major telescopes (3.6m telescope and New Technology Telescope (NTT) at the La Silla Observatory. They are equipped with state of the art instruments either built completely by ESO or ...

The ESO Science Newsletter is intended to keep the community informed about current activities of interest at ESO. The newsletter appears roughly every two to three months or whenever important news ...

The M2 Unit is an opto mechanical system constituted by a convex hyperbolic Beryllium mirror ("M2 mirror"), by the electromechanism used tosupport the mirror and to control its position, and by the ...

Extensive extinction measurements were made by Dr. H. Tug, using the 0.6-m Bochum telescope (see below). No correlation was found between extinction coefficients and direction of observation, and ...

Apart from the individual email addresses given below the SPHERE IOT can be reached best via the generic SPHERE email account sphere@eso.org ...

The opto-mechanical parts of the instrument are all contained within a cryostat, operated at a temperature of 120K, while the electronics are on the Nasmyth platform and inside the cable rotator ...

NAOMI is the Adpative Optics that are used with VLTI/ATs. It consists in four sets of deformable mirrors with 241 actuators , 4x4 Shack-Hartman sensors and SPARTA Real Time Control operating in the ...

Several teams provide support in regard to ESO's telescopes and instruments, e.g. support for observing proposal preparation and submission, observation scheduling, data flow operation, information ...

For the following ESO conferences and workshops you can find presentation slides and posters on Zenodo.

In order to make ESO-authored SPIE manuscripts easily retrievable, we provide access to the manuscripts and posters presented at the SPIE conference on Astronomical Telescopes + Instrumentation held ...

The procedures for obtaining flat fields are described in greater detail elsewhere (follow the links under the different spectroscopic modes). The different types of flat fields used for spectroscopy ...