Subject
Astronomy
Optical instrument
Description
Metal, glass
Also Foucault siderostat. Marked “Societe Genevoise, pour la construction, D’instruments de physcique, Geneve.” Wind up drive does not work. Spirit level on black metal base with 3 leveling screws.
Siderostats are used with a fixed telescope, a flat mirror is rotated by a lever arm connected to motor turning once every 24 hours. James Biddle of Philadelphia imported these instruments.
Creator
Societe Genevoise D’instruments de physcique (SIP), Geneva, Switzerland
Source
Prix-courant 1900 / Société Genevoise pour la construction d'instruments de physique et de mécanique, Chemin Gourgas, Genève (1900) Genève : W. Kündig & Fils. Page 86.
Publisher
Astronomy Department, University of Illinois, Urbana, Illinois
Rights
Copyright Michael Svec
Identifier
University of Illinois Observatory Collection A209
University ID 055343
Coverage
University of Illinois Observatory, Urbana, Illinois
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