Large Binocular Telescope Interferometer: The universal beam combiner

Philip M. Hinz, Tom Connors, Tom McMahon, Andrew Cheng, Chien Y. Peng, William F. Hoffmann, Donald W. McCarthy, J. Roger P. Angel

Research output: Contribution to journalConference articlepeer-review

22 Scopus citations


The Large Binocular Telescope with its single mount design and adaptive optics integrated into the secondary mirrors, I provides a unique platform for mid-infrared interferometry. The Large Binocular Telescope Interferometer is designed to take advantage of this platform, specifically for extrasolar planet detection in preparation for the Terrestrial Planet Finder mission. The instrument consists of three components: a general purpose or Universal Beam Combiner (UBC) which preserves the sine condition of the array, a nulling interferometer for the LBT (NIL) to overlap the two beams and sense phase variations, and a milling-optimized mid-infrared camera (NOMIC) for detection of the final images. Here we focus on the design and tolerancing of the UBC. The components of the system are currently being fabricated and the instrument is planned to be integrated with the LBT in 2006.

Original languageEnglish (US)
Article number88
Pages (from-to)787-797
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Issue numberPART 2
StatePublished - 2004
EventNew Frontiers in Stellar Interferometry - Glasgow, United Kingdom
Duration: Jun 21 2004Jun 25 2004

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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