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Using an Image-Intensifier in Astronomy

Published online by Cambridge University Press:  12 April 2016

Thierry Midavaine
Thierry Midavaine*
Affiliation:
Appt. 1199, 142 Bd. Masséna, F-75013 Paris, France

Abstract

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The use of an RTC XX1390 second-generation intensifier (which consists of a S20R photocathode, a micro-channel plate and a screen) was described. In visual work, very faint objects become visible. Photographically, an 18th-magnitude object has been detected through a layer of cirrus. The effective focal length used was 20 m, giving a resolution of 1 arcsecond, thanks to the short exposure times needed. With a Celestron C8 telescope, the coma of Comet Halley was photographed with 2-second exposures, allowing transitory phenomena to be detected. Used in conjunction with video techniques, high time-resolution images could be obtained, opening up the possiblity of new forms of observation of faint objects.

Type
Part II Observational Methods
Information
International Astronomical Union Colloquium , Volume 98: Stargazers: The Contribution of Amateurs to Astronomy , 1988 , pp. 110
Copyright
Copyright © Springer-Verlag 1988

References

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