Cerro tololo inter-American observatory, Victor M. Blanco 4-m telescope and the dark energy survey

Timothy M.C. Abbott, Rolando Catarutti, Eduardo Mondaca, Andres Montane, German Schumacher, Roberte Tighe, Alistair Walker, Del Allspach, Herman Cease, Brenna Flaugher, John Peoples, Andrew Stefanik, Jon J Thaler, Vaidotas J. Simatis

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The CTIO V. M. Blanco 4-m telescope is to be the host facility for the Dark Energy Survey (DES), a large area optical survey intended to measure the dark energy equation of state parameter, w, to a precision of ∼5%. The survey is expected to take 5 years and use a new 520 megapixel CCD prime focus imaging system: the Dark Energy Camera (DECam). In preparation for the arrival of DECam, we plan numerous upgrades to the telescope, including a new telescope control system optimized for programmed and queued survey observations, modifications to the telescope itself to improve reliability and performance, extended real-time telemetry of site and facility characteristics, and a distributed observer interface allowing for on- and off-site observations and real time quality control. These upgrades are specifically motivated by the scientific goals of the DES but will also improve community use of the telescope.

Original languageEnglish (US)
Title of host publicationGround-based and Airborne Telescopes
StatePublished - Oct 2 2006
EventGround-based and Airborne Telescopes - Orlando, FL, United States
Duration: May 24 2006May 31 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6267 II
ISSN (Print)0277-786X


OtherGround-based and Airborne Telescopes
Country/TerritoryUnited States
CityOrlando, FL


  • Astronomical survey
  • Imager
  • Observatory operations
  • Telescope upgrade

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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