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[en] The Large Binocular Telescope Interferometer is a NASA-funded nulling and imaging instrument designed to coherently combine the two 8.4-m primary mirrors of the LBT for high-sensitivity, high-contrast, and highresolution infrared imaging (1.5-13 μm). PHASECam is LBTI's near-infrared camera used to measure tip-tilt and phase variations between the two AO-corrected apertures and provide high-angular resolution observations. We report on the status of the system and describe its on-sky performance measured during the first semester of 2014. With a spatial resolution equivalent to that of a 22.8-meter telescope and the light-gathering power of single 11.8-meter mirror, the co-phased LBT can be considered to be a forerunner of the next-generation extremely large telescopes (ELT).
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Defrere, Denis ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Hinz, P.; Steward Observatory, The Univ. of Arizona (United States)
Downey, E.; Steward Observatory, The Univ. of Arizona (United States)
Ashby, D.; Large Binocular Telescope Observatory, The Univ. of Arizona (United States)
Bailey, V.; Steward Observatory, The Univ. of Arizona (United States)
Brusa, G.; Steward Observatory, The Univ. of Arizona (United States)
Christou, J.; Large Binocular Telescope Observatory, The Univ. of Arizona (United States)
Danchi, W. C.; NASA Goddard Space Flight Ctr. (United States)
Grenz, P.; Steward Observatory, The Univ. of Arizona (United States)
Hill, J. M.; Large Binocular Telescope Observatory, The Univ. of Arizona (United States)
Hoffmann, W. F.; Steward Observatory, The Univ. of Arizona (United States)
Leisenring, J.; Steward Observatory, The Univ. of Arizona (United States)
Lozi, J.; Steward Observatory, The Univ. of Arizona (United States)
McMahon, T.; Steward Observatory, The Univ. of Arizona (United States)
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