Phase Referenced Stellar Interferometry at PTI

Details Phase Referenced Stellar Interferometry at PTI Phase Referenced Stellar Interferometry at PTI

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.8712l&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #87.12; Bulletin of the American Astronomical Society, Vol. 31, p.1503

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We discuss implementation and testing of phase referencing at the Palomar Testbed Interferometer. The implementation uses an isoplanatic phase reference with separate primary and secondary beam combiners, linked with laser metrology. Preliminary work has achieved a coherent integration time of 250 ms, compared with 10-20 ms for the ordinary bright star mode. Observations have been made of several visual binaries, including 16 Cyg AB (mk = 4.5 and 4.6, resp.) which demonstrate that phase-referenced visibility measurements can be calibrated at the level of 2 - 7%

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