Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1351..689g&link_type=abstract
IN: Digital image synthesis and inverse optics; Proceedings of the Meeting, San Diego, CA, July 9-13, 1990 (A92-18776 05-74). Be
Astronomy and Astrophysics
Astronomy
Fourier Transformation, Infrared Astronomy, Infrared Interferometers, Near Infrared Radiation, Optical Paths, Wave Diffraction, Aberration, Seeing (Astronomy), Signal To Noise Ratios, Transfer Functions
Scientific paper
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.
Dainty Chris
Fuensalida Jesus J.
Ghez Ph.
Mariotti Jean-Marie
Monin Jean-Louis
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