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Proceedings Paper

Steps toward hypertelescopes on Earth and in space
Author(s): A. Labeyrie; H. Le Coroller; J. Dejonghe
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Paper Abstract

For imaging faint and complex sources at high angular resolution, hypertelescopes (direct-imaging many-aperture interferometers using a densified pupil) gain sensitivity with respect to few-aperture interferometers and to Fizeau interferometers. Steps are taken to expand the Carlina-Proto technical prototype built at Observatoire de Haute-Provence, 18m in aperture size, and to define a larger (100-200m) Carlina-Science version, incorporating 100 or more small apertures. Following initial observing by Speckle Interferometry, adaptive co-pistoning is expected to become available, using "Dispersed Speckle" piston sensing on bright stars, and a modified Laser Guide Star on faint (mv > 25) fields. "Extremely Large Hypertelescope" versions of such instruments, with aperture size beyond a kilometer, are considered for deep-field imaging on cosmological sources. These can be interferometrically coupled with ELTs, or arrays of telescopes, at sites such as the Macon range (Andes) considered by ESO for its E-ELT. Space versions are proposed to ESA and NASA.

Paper Details

Date Published: 28 July 2008
PDF: 11 pages
Proc. SPIE 7013, Optical and Infrared Interferometry, 70133J (28 July 2008); doi: 10.1117/12.792387
Show Author Affiliations
A. Labeyrie, Collège de France and Observatoire de la Côte d'Azur (France)
H. Le Coroller, Observatoire de Haute-Provence (France)
J. Dejonghe, Collège de France and Observatoire de Haute-Provence (France)

Published in SPIE Proceedings Vol. 7013:
Optical and Infrared Interferometry
Markus Schöller; William C. Danchi; Françoise Delplancke, Editor(s)

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