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Instantaneous determination of a variable extinction coefficient in photoelectric photometry

Published online by Cambridge University Press:  12 April 2016

E. Poretti  and
F. Zerbi
E. Poretti
Affiliation:
Osservatorio Astronomico di Brera, Merate, Italy
F. Zerbi
Affiliation:
Dipartimento di Fisica Nucleare e Teorica, Università di Pavia, Italy

Abstract

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Observational evidence was found that even in good photometric sites the extinction coefficient can display large variations during a night. The authors propose a method to determine instantaneous values of the extinction coefficient: it is based on the knowledge of the extra-atmosphere instrumental magnitude m0 for a reference star. An analytical procedure is proposed to determine a reliable value for m0 and results are very satisfactory.

Type
Session 4 Automatic Photoelectric Telescopes and Extinction
Information
International Astronomical Union Colloquium , Volume 136: Stellar Photometry – Current Techniques and Future Developments , 1993 , pp. 221 - 227
Copyright
Copyright © C.J. Butler and I. Elliottt 1993

References

Vaníček, P., 1971, Astrophys. Space Sci. 12, 10 CrossRefGoogle Scholar
Poretti, E., Mantegazza, L., 1992, The Messenger 68, 33 Google Scholar