Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003kfnts...4...65z&link_type=abstract
Kinematika i Fizika Nebesnykh Tel, Suppl, no. 4, p. 65-70
Astronomy and Astrophysics
Astronomy
Scientific paper
There are two competing schemes producing interference in astronomy, one combining several telescopes as an interferometric array, the other capable of count correlation measurements with several telescopes. The correlation scheme is known as the Intensity Interferometer and will be considered in this work as the supposed project. It is based on the Synchronous Network of distant Telescopes (SNT) involving telescopes at three observatories in Ukraine, Russia and Bulgaria and called SNTI (the SNT Interferometer). Almost all of the interferometers of today use the~Michelson beam combination among several phased pupils with the baseline of tens meters. The~SNTI can potentially produce results like those of based on the classic Michelson scheme. The SNTI provides a baseline of continental scale about of 1500 km too. It consists of several fairly separated telescopes operating synchronously and equipped with photon counting photometers. The data network synchronization is based on GPS receivers to discipline local photometer timing systems relative to UTC within a few nanoseconds. Key component of the event measurement system includes an~original scheme of the probabilistic identification of coincident counts. Science programs include: detection of the ultrahigh-frequency variability by consideration of the Bose-Einstein degeneracy, interferometric imaging, as well a variety of other astrophysical objectives.
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