Cross Talk Effects on the NPOI Multibeam Combiner

Details Cross Talk Effects on the NPOI Multibeam Combiner Cross Talk Effects on the NPOI Multibeam Combiner

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...206.1501s&link_type=abstract

American Astronomical Society Meeting 206, #15.01; Bulletin of the American Astronomical Society, Vol. 37, p.456

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present results of a series of tests done with the Navy Prototype Optical Interferometer multibeam combiner. These tests take advantage of the NPOI beam combiner design, where certain baselines can be recorded on two different spectrographs. Based on this characteristic we chose a set of stations such that one spectrograph only records the light from two stations, while a second one records these two stations as well as two additional ones. Since the first spectrograph has only one fringe frequency, it is used as a reference for comparison with the second spectrograph, when light from a third and a fourth station are added to it. These observations were used to characterize properties of the NPOI system and to study the effects of fringe frequency cross talk resulting from adding multiple baselines in the same spectrograph.

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