The large binocular telescope as an early elt

J. M. Hill, P. M. Hinz, D. S. Ashby

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

3 Scopus citations

Abstract

The Large Binocular Telescope (LBT) has two 8.4-m primary mirrors on a common AZ-EL mounting. The dual Gregorian optical configuration for LBT includes a pair of adaptive secondaries. The adaptive secondaries are working reliably for science observations as well as for the commissioning of new instruments. Many aspects of the LBT telescope design have been optimized for the combination of the two optical trains. The telescope structure is relatively compact and stiff with a lowest eigenfrequency near 8 Hz. A vibration measurement system of accelerometers (OVMS) has been installed to characterize the vibrations of the telescope. A first-generation of the binocular telescope control system has been deployed on-sky. Two instruments, LBTI and LINC-NIRVANA, have been built to take advantage of the 22.65-m diffraction baseline when the telescope is phased. This diffraction-limited imaging capability (beyond 20-m baseline) positions LBT as a forerunner of the new generation of extremely large telescopes (ELT). We discuss here some of the experiences of phasing the two sides of the telescope starting in 2010. We also report some lessons learned during on-sky commissioning of the LBTI instrument.

Original languageEnglish (US)
Title of host publication3rd AO4ELT Conference - Adaptive Optics for Extremely Large Telescopes
PublisherINAF - Osservatorio Astrofisico di Arcetri Largo Enrico Fermi
ISBN (Print)9788890887604
DOIs
StatePublished - Jan 1 2013
Event3rd Conference on Adaptive Optics for Extremely Large Telescopes, AO4ELT 2013 - Florence, Italy
Duration: May 26 2013May 31 2013

Publication series

Name3rd AO4ELT Conference - Adaptive Optics for Extremely Large Telescopes

Other

Other3rd Conference on Adaptive Optics for Extremely Large Telescopes, AO4ELT 2013
CountryItaly
CityFlorence
Period5/26/135/31/13

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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    Hill, J. M., Hinz, P. M., & Ashby, D. S. (2013). The large binocular telescope as an early elt. In 3rd AO4ELT Conference - Adaptive Optics for Extremely Large Telescopes (3rd AO4ELT Conference - Adaptive Optics for Extremely Large Telescopes). INAF - Osservatorio Astrofisico di Arcetri Largo Enrico Fermi. https://doi.org/10.12839/AO4ELT3.13167