3 December 1980 High Angular Resolution Astronomical Techniques: Speckle Interferometry And Related Methods
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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.
© (1980) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Simon P. Worden, "High Angular Resolution Astronomical Techniques: Speckle Interferometry And Related Methods", Proc. SPIE 0243, Applications of Speckle Phenomena, (3 December 1980); doi: 10.1117/12.959287; https://doi.org/10.1117/12.959287
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