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Astrophysics Luncheon Seminar

High Contrast Interferometry with LBTI
Presented by Eckhart Spalding
University of Arizona

Monday, July 22, 2019
12:00 noon in 169-336

Abstract
The Large Binocular Telescope Interferometer (LBTI) is a versatile instrument which can combine adaptive-optics-corrected light beams from both unit telescopes of the LBT onto a single detector. LBTI can conduct sensitive interferometric observations in either of two different modes: nulling mode or Fizeau mode. In this talk, I will start with an overview of the development of LBTI from its ancestral beginnings as a nuller on the multi-segmented MMT, up through the recently-completed HOSTS nulling survey of exozodiacal dust disks. I will follow this with an emphasis on the next, new interferometric mode which I am working to commission: the Fizeau mode, which, unlike nulling, can extract resolutions out to the LBT's full 22.7-m baseline and is optimal for the regeneration of images. It is this mode which will make the LBT an ELT-caliber imaging telescope unique in the pre-ELT era.

JPL Contact: Vanessa Bailey (4-2034)


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