Adaptive optics and interferometry

Details Adaptive optics and interferometry Adaptive optics and interferometry

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pht....44d..48b&link_type=abstract

Physics Today (ISSN 0031-9228), vol. 44, April 1991, p. 48-51.

Physics

Optics

4

Adaptive Optics, Atmospheric Turbulence, Infrared Astronomy, Instrument Compensation, Interferometry, Angular Resolution, Astronomical Observatories, Light (Visible Radiation)

Scientific paper

Adaptive optics and interferometry, two techniques that will improve the limiting resolution of optical and infrared observations by factors of tens or even thousands, are discussed. The real-time adjustment of optical surfaces to compensate for wavefront distortions will improve image quality and increase sensitivity. The phased operation of multiple telescopes separated by large distances will make it possible to achieve very high angular resolution and precise positional measurements. Infrared and optical interferometers that will manipulate light beams and measure interference directly are considered. Angular resolutions of single telescopes will be limited to around 10 milliarcseconds even using the adaptive optics techniques. Interferometry would surpass this limit by a factor of 100 or more. Future telescope arrays with 100-m baselines (resolution of 2.5 milliarcseconds at a 1-micron wavelength) are also discussed.

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