Space-time analysis of photon-limited stellar speckle interferometry

Details Space-time analysis of photon-limited stellar speckle interferometry Space-time analysis of photon-limited stellar speckle interferometry

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980josa...70.1354o&link_type=abstract

Optical Society of America, Journal, vol. 70, Nov. 1980, p. 1354-1361.

Physics

Optics

7

Interferometry, Power Spectra, Signal To Noise Ratios, Speckle Patterns, Spectrum Analysis, Stellar Spectrophotometry, Astronomical Photography, Atmospheric Optics, Estimating, Space-Time Functions, Telescopes

Scientific paper

The standard method of stellar speckle interferometry, in which short exposure photographs are individually analyzed, is not the most general method of extracting object information from the time-varying image intensity. A space-time analysis is introduced in which both spatial and temporal fluctuations are taken into account; the aim is to measure the power spectrum of the image with an increased signal to noise ratio. Surprisingly, this more general space-time analysis does not yield an improved signal to noise ratio at very low light levels.

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