Abstract
The note shows how to estimate accurately the optimum measuring time in the measurement of a periodical optical source by means of a synchronous photometer affected by phase-tracking error.
The procedure used can be easily generalized to sources or signal patterns not considered here.
The optimum number of scans to be averaged results to be typicallyN opt≈0.5r/ɛ for an optical source of Lorentzian signal pattern, wherer is the duty cycle of the pulsed component and ɛ the relative truncation error of the local sync to the source period.
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Work supported by Consiglio Nazionale delle Ricerche, Gruppo Nazionale di Astronomia, Settore Tecnologie Astronomiche. Trieste Observatory — Instruments and Data Processing Group (4/76).
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Rusconi, L., Sedmak, G. Estimate of the optimum measuring time in the synchronous photometry of optical sources. Astrophys Space Sci 48, 53–56 (1977). https://doi.org/10.1007/BF00643038
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DOI: https://doi.org/10.1007/BF00643038