Imaging Properties of an Hypertelescope

Details Imaging Properties of an Hypertelescope Imaging Properties of an Hypertelescope

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sf2a.conf...55p&link_type=abstract

SF2A-2007: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics held in Grenoble, France, July

Astronomy and Astrophysics

Astrophysics

Scientific paper

In the future, optical stellar interferometers are going to provide true images, by increasing the number of telescopes and by cophasing the beams. Then it is time to study the future large array using the hypertelescope mode for direct imaging applications. Numerical simulations have been performed to study the direct imaging properties. It is shown that the choice of the geometry of the array is a trade-off between the resolution, the dynamic, the field of view and the astrophysical objectives. A regular and unredundant pattern of the input pupil optimizes the dynamic, the contrast and the accuracy of the densified image, but decreases the useful field of view. A spotted star, with a low contrast, requires dynamic, whereas a large field is suitable for the multiple stars.

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