The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here:

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Torben Anderssen. Profile picture.

Torben Andersen

Professor emeritus

Torben Anderssen. Profile picture.

Euro50: Proposal for a 50 m Optical and Infrared Telescope


  • Arne Ardeberg
  • Torben Andersen
  • Jose Miguel Rodriguez Espinosa


  • Reinhard E. Schielicke

Summary, in English

Staff from Instituto de Astrofisica de Canarias, Lund Observatory,Physics Department and Larmor Research Institute at Galway, and TuorlaObservatory is collaborating on studies for a 50 m optical and infraredtelescope. The telescope concepts are based on the work on extremelylarge telescopes carried out during 1991-2000 at Lund Observatory, andon the experience from the 10.4 m segmented Grantecan telescopepresently under construction. The proposed 50 m telescope is a fullyadaptive Nasmyth telescope with a Ritchey Chretien configuration. Itwill have an aspherical, segmented primary mirror with 2 m largesegments and a deformable secondary. Adaptive optics will be implementedin several steps. From the beginning, there will be single-conjugateadaptive optics for the K-band. Next, and within the first year ofoperation, the telescope will have single-conjugate adaptive optics forvisible wavelengths. As a third step, and another year of operation,dual-conjugate adaptive optics will be made available for the K-band.The telescope will be housed in a co-rotating enclosure at the Roque delos Muchachos observatory on La Palma. Further studies are in progressaiming at preparation of a proposal during the first half of 2002.


  • Lund Observatory

Publishing year





Reviews in modern astronomy. 15, Astronomy with large telescopes from ground and space



Document type

Conference paper


John Wiley & Sons Inc.


  • Astronomy, Astrophysics and Cosmology