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Proceedings Paper

High Angular Resolution Astronomical Techniques: Speckle Interferometry And Related Methods
Author(s): Simon P. Worden
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Paper Abstract

The last decade has seen impressive progress towards the goal of removing degrading effects of the earth's atmosphere on astronomical data. Much of this work requires data obtained on tine scales shorter than change times in the atmospheric transfer function, typically 10 msec. Speckle interferometry, relying on post processing of short exposure images, provides two orders of magnitude increase in angular resolution for studying object sizes and binary star orbits. Instruments for detecting and recording individual photon arrivals extend speckle interferometry to at least stellar magnitude +15. Recent work shows that actual images are extractable from speckle data. Alternatively, deformable optics systems detect and correct wavefront errors to produce nearly diffraction-limited images in real time. Amplitude, Michelson, and intensity interferometry show good promise for getting very high resolution results from systems with optical path differences tens of meters in scale. Speckle and other forms of interferometry are now being extended to the infrared spectral region.

Paper Details

Date Published: 3 December 1980
PDF: 9 pages
Proc. SPIE 0243, Applications of Speckle Phenomena, (3 December 1980); doi: 10.1117/12.959287
Show Author Affiliations
Simon P. Worden, Los Angeles Air Force Station (United States)


Published in SPIE Proceedings Vol. 0243:
Applications of Speckle Phenomena
William H. Carter, Editor(s)

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