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Clock-spring driven heliostat designed to observe the sun or sun-related phenomena, or to bring solar radiation into a laboratory setting. The spring driven clockwork slowly rotates a mirror so as to project a steady image of the sun on a target such as a screen or telescope. It was obtained from the inventory of the machine shop of the original Smithsonian Astrophysical Observatory and so likely dates from the late 19th century. Marked as a Keith Heliostat. Object was restored, including reconstructed parts based upon a complete example in the NMAH collection. PR&S staff at the Garber Facility performed the restoration.

 Display Status

This object is on display in Mary Baker Engen Restoration Hangar at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Mary Baker Engen Restoration Hangar
Object Details
Country of Origin United States of America Type INSTRUMENTS-Scientific Manufacturer Edward Kubel
 Dimensions 3-D: 12.7 x 27.9 x 30.5cm (5 x 11 x 12 in.)
 Materials brass, glass
Fittings - brass
 Inventory Number A19880210000 Credit Line From shop inventory of the original Smithsonian Astrophysical Observatory, Silver Hill Facility. Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use.