Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....51..199b&link_type=abstract
Astronomy and Astrophysics, vol. 51, no. 2, Sept. 1976, p. 199-207.
Astronomy and Astrophysics
Astrophysics
3
Astronomical Photometry, Electrophotometry, Error Analysis, Statistical Analysis, Instrument Errors, Optimization, Precision, Time Dependence
Scientific paper
The paper analyzes the problem of optimal measuring times for photoelectric photometry of nonperiodic fast astronomical phenomena. Errors due to photodetection and scintillation noise are first analyzed for a steady source, and then the precision of measurement is estimated by taking into account the error due to the unknown variation of the mean value of the signal during the measurement time, together with statistical errors. Calculations are performed for a monoband and a triple-band system. It is found that for the monoband case the precision cannot exceed 3-8 per cent at measuring times between 0.5 and 1.5 sec for slow rising phenomena, or 6-15 per cent at 0.2-0.5 sec for fast rising phenomena. For the triple-band case the precision is slightly worse.
Belvedere Gaetano
Paterno' Lucio
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