Realization and theoretical limits of the spectral resolution in double Fourier interferometric imaging with an optical telescope array.

Details Realization and theoretical limits of the spectral resolution in double Fourier interferometric imaging with an optical telescope array. Realization and theoretical limits of the spectral resolution in double Fourier interferometric imaging with an optical telescope array.

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jmo....45...51z&link_type=abstract

Journal of Modern Optics, Vol. 45, No. 1, p. 51 - 67

Physics

Optics

Telescope Arrays: Interferometry

Scientific paper

The realization and theoretical limits of the spectral resolution in double Fourier interferometric imaging (DFII) with a phase telescope array are presented. The realization and the effects of optical path difference (OPD) modulations are discussed. In practice, DFII can be realized under approximation. In this case, relations between the spectral resolution, the interferometer's parameters and the observed star's parameters are derived. For a two-aperture interferometer with an east-west baseline of 100 m and telescope diameter of 8 m, the spectral resolution is limited to several thousands or less for a star having a magnitude of five, six or fainter, a field of view equal to or larger than the Airy disc of the diffraction pattern of the single telescope aperture and a signal-to-noise ratio of three in the interferogram.

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