1 August 1990 Image reconstruction techniques for the Infrared-Optical Telescope Array
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Abstract
Hybrid mapping techniques originally developed for radio aperture synthesis imaging are applied to the case of image reconstruction in optical interferometry. It is found that the use of redundant baselines with hybrid mapping can increase the fraction of phase information that is obtained in a realistic optical experiment to approach that obtained in a typical multistation radio experiment. However, this additional information does not greatly improve the quality of the resulting maps in cases with good coverage of the u-v plane. Thus, in constructing an experiment with redundant baselines, the adequacy of the u-v coverage should be considered along with any desire for redundancy. The use of phase differences between two colors in a dispersed fringe for hybrid mapping experiments are investigated and it is found that maps may be made of comparable quality to hybrid maps with phase closure.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
F. Peter Schloerb, "Image reconstruction techniques for the Infrared-Optical Telescope Array", Proc. SPIE 1237, Amplitude and Intensity Spatial Interferometry, (1 August 1990); doi: 10.1117/12.19290; https://doi.org/10.1117/12.19290
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KEYWORDS
Phase measurement

Visibility

Associative arrays

Interferometers

Image restoration

Infrared telescopes

Telescopes

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