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Optical Observing Techniques for Faint Extended Surface Brightness

Published online by Cambridge University Press:  08 February 2017

Gerhard F. O. Schnur  and
Kalevi Mattila
Gerhard F. O. Schnur
Affiliation:
Astronomical Institute Ruhr-University Bochum P.O. Box 10 21 48 D–4630 Bochum 1 FRG
Kalevi Mattila
Affiliation:
Helsinki University Observatory Tähtitorninmäki SF–00130 Helsinki Finland

Abstract

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The measurement of faint extended surface brightness at a level of a few S10 is hampered by the disturbingly bright contributions of the Light of the Night Sky (LONS), consisting of, among others, the zodiacal light, airglow, and integrated starlight. Special observing techniques are necessary for investigations of the diffuse light in clusters of galaxies (DLCG) and for the determination of the extragalactic background light (EBL). We argue for the two-telescope method as an effective means to compensate for the bright components of the LONS, which will allow an accurate determination of faint extended surface brightnesses.

Type
V. Future Plans and Approaches
Information
Symposium - International Astronomical Union , Volume 139: The Galactic and Extragalactic Background Radiation , 1990 , pp. 461 - 462
Copyright
Copyright © Kluwer 1990 

References

REFERENCES

Mattila, K. 1989, Proc. IAU Symp. No. 139, Galactic and Extragalactic Background Radiation, ed. Bowyer, S. and Leinert, Ch. (Dordrecht: Kluwer Academic Publisher).Google Scholar
Mattila, K. Schnur, G. F. O. 1988, ESO Messenger, 51, 34.Google Scholar
Roach, F. E. and Gordon, J. L. 1973, The Light of the Night Sky, D. Reidel Publ. Comp.: Dordrecht/Boston.Google Scholar