Three statistical tests for digital photometry

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Digital Techniques, Electrophotometry, Numerical Control, Scintillation Counters, Statistical Tests, Atmospheric Effects, Computer Techniques, Real Time Operation

Scientific paper

The statistical tests for signal anomalies in digital photometric instruments are described and their computation fomulas are given. The tests can easily be calculated in real time and are able to discriminate between photometric signals, the atmospheric scintillation, slow changes or oscillations (due to variable absorption and decentering), and asymmetry. The only requirement for the tests is that the total integration time be broken into more than 100 subintervals. The tests have been in use for the last seven years as part of the Geneva Seven Color Photometric System and are found to be very useful in eliminating slow and rapid anomalies in photometrical observations.

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