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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

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