Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..48...57s&link_type=abstract
Astrophysics and Space Science, vol. 48, no. 1, May 1977, p. 57-63. Research supported by the Consiglio Nazionale delle Ricerche
Astronomy and Astrophysics
Astrophysics
3
Astronomical Observatories, Computer Techniques, On-Line Programming, Real Time Operation, Spectrum Analysis, Statistical Analysis, Confidence Limits, Systems Engineering, X Ray Sources
Scientific paper
This paper describes a real-time spectrum analyzer with on-line definition of the confidence levels built for a research program on periodical components of unknown period in optical sources. The system is realized by a photon-counting photometer connected on-line to a computer that elaborates in real-time the data from the photometer and displays the spectrum of the source measured. The spectrum is normalized to unity mean value, and the display is calibrated by the confidence levels relative to the averaged chi-squared distribution of the spectrum displayed. Some experimental data show the performance of the machine that operates in real-time at full efficiency up to 160 Hz
Santin Paolo
Sedmak Giorgio
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