Statistically rigorous reduction of optical lunar occultation measurements

Details Statistically rigorous reduction of optical lunar occultation measurements Statistically rigorous reduction of optical lunar occultation measurements

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....67..209k&link_type=abstract

Astronomy and Astrophysics, vol. 67, no. 2, July 1978, p. 209-220.

Astronomy and Astrophysics

Astrophysics

26

Data Reduction, Late Stars, Lunar Occultation, Scintillation Counters, Statistical Analysis, Astronomical Models, Autocorrelation, Covariance, Fresnel Diffraction, Iterative Solution, Least Squares Method, Lunar Limb, Photometry, Standard Deviation, Stellar Occultation

Scientific paper

The reduction techniques currently used for optical lunar-occultation measurements are reviewed, and a procedure is outlined by which intensity scintillation effects can be taken into account in both a stochastic model and a reduction model. Scintillation measurements performed under various meteorological conditions and at different zenith distances are employed to simulate a large number of lunar occultation patterns. The effects of intensity scintillation on such parameters as apparent stellar diameters and times of occultation are demonstrated by applying the reduction techniques to the simulated patterns. It is shown that lunar occultation patterns can be represented by undisturbed Fresnel curves only near the zenith, where scintillation effects are small, and that reduction methods which take scintillation into account give correct values for the unknown parameters at all zenith distances.

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