Diffraction-limited observations of astronomical sources with a rotation shearing interferometer in the near infrared

Bibcode
1990SPIE.1351..689G
DOI
10.1117/12.23689
Ghez, P.; Monin, J.-L.; Mariotti, J.-M.; Perrier, C.; Dainty, C.; Fuensalida, J. J.
Bibliographical reference

IN: Digital image synthesis and inverse optics; Proceedings of the Meeting, San Diego, CA, July 9-13, 1990 (A92-18776 05-74). Bellingham, WA, Society of Photo-Optical Instrumentation Engineers, 1990, p. 689-697. Research supported by INSU.

Advertised on:
11
1990
Number of authors
6
IAC number of authors
1
Citations
0
Refereed citations
0
Description
An experiment aimed at diffraction-limited imaging of astronomical sources in the 2-5-micron range is presented. It is based on a rotation shearing interferometer that produces fringes in the pupil plane that can be scanned through the zero optical path difference. The two-dimensional interferograms are recorded with an infrared camera looking at the recombined pupil image. The modulus and the phase of the Fourier transform of the object intensity distribution are derived from these interferograms. The main advantage of this technique is its constant transfer function that makes it independent of seeing variations and instrumental aberrations.
Type
Non-refereed
Infrared astronomy

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