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The Optics, the Mounting, the Refractor

Chapter
Part of the Astrophysics and Space Science Library book series (ASSL, volume 398)

Abstract

This chapter describes the stages in the manufacture of optical glass. The fabrication of the huge lenses for the double telescope, for both its visual and photographic objectives, is described. The Grande Lunette with its 83 cm objective remains to this day the largest refracting telescope in Europe and the third largest in the world. The equatorial mounting of the telescope, its tube and driving mechanism are also described.

Keywords

Lead Silicate Glass Block Declination Angle Large Lens Flint Glass 
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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    In 1927, a sagging was noticed in the pylon carrying the upper landing, which brought the polar axis to scrape upon a particular spot. Two braces were added, on either side of the pylon, of whose effectiveness Fernand Baldet knew. See the observational notebooks of Fernand Baldet, preserved in the observatory’s archives.Google Scholar

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.ParisFrance

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