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A Four Star Photometer

Published online by Cambridge University Press:  12 April 2016

J.C. Valtier ,
J.M. Le Contel ,
P. Antonelli ,
P. Michel  and
J.P. Sareyan
J.C. Valtier
Affiliation:
O.C.A., Departement Fresnel, U.R.A. 1361, B.P. 229, 06304 Nice cedex 4, France
J.M. Le Contel
Affiliation:
O.C.A., Departement Fresnel, U.R.A. 1361, B.P. 229, 06304 Nice cedex 4, France
P. Antonelli
Affiliation:
O.C.A., Departement Fresnel, U.R.A. 1361, B.P. 229, 06304 Nice cedex 4, France
P. Michel
Affiliation:
O.C.A., Departement Fresnel, U.R.A. 1361, B.P. 229, 06304 Nice cedex 4, France
J.P. Sareyan
Affiliation:
O.C.A., Departement Fresnel, U.R.A. 1361, B.P. 229, 06304 Nice cedex 4, France

Abstract

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A new photometer is presently being developed at the O.C.A. Observatory. It consists of four arms and a CCD camera situated in the focal plane of the telescope. Each arm can move in both directions and support a diaphragm and a liquid optic guide that directs the light to a photomultiplier. The simultaneous acquisition of the four signals enables to obtain magnitude differences between the objects in real time. A typical use of this photometer is to observe at the same time one or two variables, comparison stars and the sky background.

Type
Session 3 New Techniques
Information
International Astronomical Union Colloquium , Volume 136: Stellar Photometry – Current Techniques and Future Developments , 1993 , pp. 179 - 186
Copyright
Copyright © C.J. Butler and I. Elliottt 1993

References

Barwig, H., Schoembs, R. 1987, The Messenger 48, 29.Google Scholar
Chapellier, E., Garrido., R. 1990, A and A, 230, 304.Google Scholar
Piccioni, A., Bartolini, C., Guarnieri, A., Giovannelli, F. 1979, Acta Astron., 29, 463.Google Scholar
Querci, F.R., Querci, M., Fontaine, B., Klotz, A. 1990, Variable Star Research: An international perspective, edit. Percy, J.R., Mattei, J.A. and Sterken, C. , Cambridge University Press, 221.Google Scholar
Sterken, C. et al. 1986, A and A Supp. 66, 11.Google Scholar