Testing and alignment of the LBTI

Jihun Kim; Philip Hinz; Olivier Durney; Tom Connors; Manny Montoya; Christian Schwab

doi:10.1117/12.857342

21 July 2010 Testing and alignment of the LBTI

Jihun Kim, Philip Hinz, Olivier Durney, Tom Connors, Manny Montoya, Christian Schwab

Author Affiliations +

Proceedings Volume 7734, Optical and Infrared Interferometry II; 77341W (2010) https://doi.org/10.1117/12.857342
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

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.

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Jihun Kim, Philip Hinz, Olivier Durney, Tom Connors, Manny Montoya, and Christian Schwab "Testing and alignment of the LBTI", Proc. SPIE 7734, Optical and Infrared Interferometry II, 77341W (21 July 2010); https://doi.org/10.1117/12.857342

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