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Towards controlled Fizeau observations with the Large Binocular Telescope
Author(s): Eckhart Spalding; Phil Hinz; Steve Ertel; Erin Maier; Jordan Stone
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Paper Abstract

The Large Binocular Telescope Interferometer (LBTI) can perform Fizeau interferometry in the focal plane, which accesses spatial information out to the LBT's full 22.7-m edge-to-edge baseline. This mode has previously been used to obtain science data, but has been limited to observations where the optical path difference (OPD) between the two beams is not controlled, resulting in unstable fringes on the science detectors. To maximize the science return, we are endeavoring to stabilize the OPD and tip-tilt variations and make the LBTI Fizeau mode optimized and routine. Here we outline the optical configuration of LBTI's Fizeau mode and our strategy for commissioning this observing mode.

Paper Details

Date Published: 9 July 2018
PDF: 15 pages
Proc. SPIE 10701, Optical and Infrared Interferometry and Imaging VI, 107010J (9 July 2018); doi: 10.1117/12.2315498
Show Author Affiliations
Eckhart Spalding, Steward Observatory, The Univ. of Arizona (United States)
Phil Hinz, Steward Observatory, The Univ. of Arizona (United States)
Steve Ertel, Steward Observatory, The Univ. of Arizona (United States)
Erin Maier, Steward Observatory, The Univ. of Arizona (United States)
Jordan Stone, Steward Observatory, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 10701:
Optical and Infrared Interferometry and Imaging VI
Michelle J. Creech-Eakman; Peter G. Tuthill; Antoine Mérand, Editor(s)

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