Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978mnras.183..223d&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 183, Apr. 1978, p. 223-236. Research supported by the Science Research
Astronomy and Astrophysics
Astronomy
10
Astronomical Photometry, Binary Stars, Computerized Simulation, Interferometry, Photon Density, Speckle Patterns, Astronomical Photography, Autocorrelation, Background Radiation, Signal To Noise Ratios, Stellar Magnitude
Scientific paper
Vector autocorrelation calculations have been carried out on photon-limited computer-simulated images of binary stars. The variation of signal, background and noise with the number of pictures, the average number of detected photons per picture, the average number of additive noise photons per picture and the magnitude difference of the binary has been studied and shown to agree with a simple theory. The calculations indicate that binary stars as faint as approximately 18 mag may be resolved to the diffraction limit in 35 min of observing time on a large telescope.
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