Multiple mirror telescope as a phased array telescope

Details Multiple mirror telescope as a phased array telescope Multiple mirror telescope as a phased array telescope

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apopt..24.2565h&link_type=abstract

Applied Optics (ISSN 0003-6935), vol. 24, Aug. 15, 1985, p. 2565-2576.

Physics

Optics

37

Astrometry, Phased Arrays, Telescopes, Focal Plane Devices, Foci, Image Reconstruction, Infrared Interferometers, Optical Measurement, Polarization Characteristics, Power Spectra

Scientific paper

Experiments are summarized which have used the multiple mirror telescope (MMT) subapertures as a phased array and as a coherent phased telescope. A simple analysis is presented of the tilted focal plane geometry for coherent observation. The phased operation of the MMT is important not only for obtaining high angular resolution but also for obtaining the higher detection sensitivity which results from the better discrimination against the sky emission background for IR diffraction-limited images. Full-aperture (six-beam) diffraction-limited results for the unresolved source Gama Orionis, the well-known close binary Capella, and the resolved red supergiant Betelgeuse (including a diffraction-limited differential speckle image of the latter) are presented as a preliminary demonstration of the potential capabilities of this configuration.

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