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ISI: recent technology and science
Author(s) -
D. D. S. Hale,
Jonathon Weiner,
C. H. Townes
Publication year - 2004
Publication title -
proceedings of spie, the international society for optical engineering/proceedings of spie
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.192
H-Index - 176
eISSN - 1996-756X
pISSN - 0277-786X
DOI - 10.1117/12.549482
Subject(s) - visibility , interferometry , telescope , astronomical interferometer , optics , wavelength , adaptive optics , physics , infrared , remote sensing , optical telescope , stars , computer science , astronomy , geology
When we last reported the status of the U.C. Berkeley Infrared Spatial Interferometer (ISI) in 2002, we presented simulations, based upon our two-telescope experience, for the expected performance of a three-telescope array that would be capable of measuring three simultaneous visibilities and one closure phase at mid-infrared wavelengths. The ISI is now fully operational as an imaging array and is routinely making fringe visibility and closure phase measurements of late-type stars in the 9 to 12 micron wavelength region. We describe here the technology which is currently in use, along with actual measurements and preliminary 11.15 micron (one-dimensional) image reconstructions.

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