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 Boeing Aviation Hangar at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Boeing Aviation 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.