The European Organisation for Astronomical Research in the Southern Hemisphere (ESO) is the pre-eminent intergovernmental ...

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 ...

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 ...

An integral part of the commissioning of a new instrument at the VLT is the Science Verification phase. SV programmes will include a set of typical scientific observations that should verify and ...

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 ...

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

Astronomers have accurately measured the diameter of the faraway dwarf planet Eris for the first time by catching it as it passed in front of a faint star. This event was seen at the end of 2010 by ...

The ESO 3.6m Telescope was commissioned in 1977, and completely upgraded in 1999. In 2004 a new secondary mirror cell was manufactured, improving considerably the image quality of the telescope. In ...

The 3.58-m New Technology Telescope (NTT) was the first in the world to have a computer-controled mirror ans ESO 3.6-m telescope.

The Wide Field Imager (WFI) is a focal reducer-type camera which is permanently mounted at the Cassegrain focus of the 2.2-m MPG/ESO telescope at La Silla. With field of view of 34'x33', Nyquist ...

The 2.2m telescope at La Silla has been in operation since early 1984 and is on indefinite loan to ESO from the Max Planck Gesellschaft. The telescope time is shared between the MPI and ESO Observers.

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