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Aqueye+: a new ultrafast single photon counter for optical high time resolution astrophysics

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arxiv 1505.07339 v1 pith:NVHZBCOT submitted 2015-05-27 astro-ph.IM

L. Zampieri , G. Naletto , C. Barbieri , E. Verroi , M. Barbieri , G. Ceribella , M. D'Alessandro , G. Farisato
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A. Di Paola P. Zoccarato
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keywords aqueyehighopticalphotonsinglewillcounterinstrument
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Aqueye+ is a new ultrafast optical single photon counter, based on single photon avalanche photodiodes (SPAD) and a 4-fold split-pupil concept. It is a completely revisited version of its predecessor, Aqueye, successfully mounted at the 182 cm Copernicus telescope in Asiago. Here we will present the new technological features implemented on Aqueye+, namely a state of the art timing system, a dedicated and optimized optical train, a high sensitivity and high frame rate field camera and remote control, which will give Aqueye plus much superior performances with respect to its predecessor, unparalleled by any other existing fast photometer. The instrument will host also an optical vorticity module to achieve high performance astronomical coronography and a real time acquisition of atmospheric seeing unit. The present paper describes the instrument and its first performances.

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    astro-ph.HE 2025-02 conditional novelty 5.0 of 10

    A new fast radio burst was caught with an optical follow-up image starting 3.4 s later, giving a fluence ratio limit F_opt/F_radio <= 0.023 for a non-repeater.

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