EDP Sciences
Free access
Issue
A&A
Volume 387, Number 1, May III 2002
Page(s) 366 - 378
Section Instruments, observational techniques and data processing
DOI http://dx.doi.org/10.1051/0004-6361:20020387


A&A 387, 366-378 (2002)
DOI: 10.1051/0004-6361:20020387

Wide field interferometric imaging with single-mode fibers

O. Guyon1, 2

1  Institute for Astronomy, University of Hawaii, 640 N. A'ohoku Place, Hilo, HI 96720, USA
2  Université Pierre et Marie Curie, Paris 6, 4 Place Jussieu, 75005 Paris, France

(Received 23 January 2002 / Accepted 12 March 2002)

Abstract
Classical single-mode fiber interferometers, using one fiber per aperture, have very limited imaging capabilities and small field of view. Observations of extended sources (resolved by one aperture) cannot be fully corrected for wavefront aberrations: accurate measurements of object visibilities are then made very difficult from ground-based fiber interferometers. These limitations are very severe for the new generation of interferometers, which make use of large telescopes equipped with adaptive optics, but can be overcome by using several fibers per aperture. This technique improves the wide field imaging capabilities of both ground-based and space interferometers.


Key words: techniques: interferometric -- instrumentation: adaptive optics -- instrumentation: high angular resolution




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