Prospects for wireless optical intensity interferometry with the Southern Connecticut stellar interferometer

Elliott P. Horch; Samuel A. Weiss; Justin D. Rupert; Ryan LaRue; Pietro Peronio; Ivan Rech; Angelo Gulinatti

doi:10.1117/12.2311797

9 July 2018 Prospects for wireless optical intensity interferometry with the Southern Connecticut stellar interferometer

Elliott P. Horch, Samuel A. Weiss, Justin D. Rupert, Ryan LaRue, Pietro Peronio, Ivan Rech, Angelo Gulinatti

Author Affiliations +

Proceedings Volume 10701, Optical and Infrared Interferometry and Imaging VI; 107010Y (2018) https://doi.org/10.1117/12.2311797
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The Southern Connecticut Stellar Interferometer (SCSI) is a two-telescope astronomical intensity interferometer that was completed in June 2016 and has been taking photon correlation data since that time. It uses single-photon avalanche diode (SPAD) detectors at the telescope focal plane and a central timing module, which records the signals from both telescopes simultaneously. In the observations taken to date, single-pixel SPADs have been connected to signal cables that stretch from each telescope to the timing module. However, we are now in the process of making the instrument “wireless” by using a separate timing module at each telescope and synchronizing the signals recorded using GPS timing cards. We have also upgraded one of the two stations with an 8-pixel SPAD device, which allows us to achieve higher count rates in a variety of observing conditions. In this paper, we report on the current state of the instrument, including engineering tests made in preparation for wireless operation, and we discuss the expected capabilities in that mode.

Conference Presentation

Citation Download Citation

Elliott P. Horch, Samuel A. Weiss, Justin D. Rupert, Ryan LaRue, Pietro Peronio, Ivan Rech, and Angelo Gulinatti "Prospects for wireless optical intensity interferometry with the Southern Connecticut stellar interferometer", Proc. SPIE 10701, Optical and Infrared Interferometry and Imaging VI, 107010Y (9 July 2018); https://doi.org/10.1117/12.2311797

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