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Proceedings Paper

Testing and alignment of the LBTI
Author(s): Jihun Kim; Philip Hinz; Olivier Durney; Tom Connors; Manny Montoya; Christian Schwab
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Paper Abstract

The Large Binocular Telescope Interferometer (LBTI) has been developed and tested and is almost ready to be installed to LBT mount. In preparation for installation, testing of the beam combination and phasing of the system have been developed. The testing is currently in progress. The development of a telescope simulator for LBTI has allowed verification of phasing and alignment with a broad band source at 10 microns2. Vibration tests with the LBTI mounted to the LBT were carried out in July 2008, with both seismic accelerometers and an internal optical interferometric measurement. The results have allowed identification of potential vibration sources on the telescope. Plans for a Star Simulator that illuminates each LBT aperture at the prime focus with two artificial point sources derived from a single point source via fiber optics are presented. The Star Simulator will allow testing of LBTI with the telescope and the adaptive secondaries in particular. Testing with the Star Simulator will allow system level testing of LBTI on the telescope, without need to use on-sky time. Testing of the Star Simulator components are presented to verify readiness for use with the LBTI.

Paper Details

Date Published: 21 July 2010
PDF: 12 pages
Proc. SPIE 7734, Optical and Infrared Interferometry II, 77341W (21 July 2010); doi: 10.1117/12.857342
Show Author Affiliations
Jihun Kim, Steward Observatory, The Univ. of Arizona (United States)
Philip Hinz, Steward Observatory, The Univ. of Arizona (United States)
Olivier Durney, Steward Observatory, The Univ. of Arizona (United States)
Tom Connors, Steward Observatory, The Univ. of Arizona (United States)
Manny Montoya, Steward Observatory, The Univ. of Arizona (United States)
Christian Schwab, Univ. Heidelberg (Germany)


Published in SPIE Proceedings Vol. 7734:
Optical and Infrared Interferometry II
William C. Danchi; Françoise Delplancke; Jayadev K. Rajagopal, Editor(s)

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