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Stargazers pp 110-110 | Cite as

Using an Image-Intensifier in Astronomy

  • Thierry Midavaine
Conference paper

Abstract

The use of an RTC XX 1390 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.

Keywords

Data Collection Exposure Time General Electric Focal Length Visual Observation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

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    Caron, R., Koutchmy, S., Sarazin, M.: “A study of disconnection velocities in the plasma tail of P/Halley”, paper presented at this ColloquiumGoogle Scholar
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    Maley, P.D.: “Achievements in astronomical video data collection”, paper presented at this ColloquiumGoogle Scholar
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    Dahlmark, L., “Searching for variables, and constructing a slit-less spectroscope”, paper presented at this ColloquiumGoogle Scholar
  4. 4.
    Midavaine, T.: in Astronomie: le guide de l’observateur, ed. Martinez, P., Vol. 2, Chap. XIX, Paris, 1987Google Scholar
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    Mauro, J.A., ed.: Optical Engineering Handbook, General Electric Co., Syracuse, N.Y., 1966Google Scholar
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    Midavaine, T.: Observations et travaux, in press.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1988

Authors and Affiliations

  • Thierry Midavaine
    • 1
  1. 1.Appt. 1199ParisFrance

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