High resolution interferometric imaging using a large optical telescope

R. H. Frater; J. G. Robertson; J. D. O’Sullivan; R. P. Norris

doi:10.1117/12.966771

High resolution interferometric imaging using a large optical telescope

R. H. Frater, J. G. Robertson, J. D. O’Sullivan, R. P. Norris

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Abstract

Large optical telescopes (diameter ∼4m) used for astronomy have a theoretical diffraction-limited angular resolution of ∼0.03 arcsec. However, when used for conventional long-exposure imaging, the resolution is degraded to ∼1 arcsec by phase perturbations due to the Earth’s atmosphere. We discuss methods to overcome this so-called “seeing” limit, with particular reference to a method based on the use of a mask in the aperture plane of the telescope. We discuss results from preliminary tests of this method.

Original language	English
Pages (from-to)	255-258
Number of pages	4
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	702
DOIs	https://doi.org/10.1117/12.966771
Publication status	Published - 18 May 1987
Externally published	Yes

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AU - Norris, R. P.

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AB - Large optical telescopes (diameter ∼4m) used for astronomy have a theoretical diffraction-limited angular resolution of ∼0.03 arcsec. However, when used for conventional long-exposure imaging, the resolution is degraded to ∼1 arcsec by phase perturbations due to the Earth’s atmosphere. We discuss methods to overcome this so-called “seeing” limit, with particular reference to a method based on the use of a mask in the aperture plane of the telescope. We discuss results from preliminary tests of this method.

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High resolution interferometric imaging using a large optical telescope

Abstract

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