Accession No

3197

Brief Description

coelostat, by Adam Hilger Ltd., English, c.1910

Origin

England; London

Maker

Adam Hilger Ltd.

Class

astronomy

Earliest Date

1910

Latest Date

1910

Inscription Date

Material

metal (oxidised brass, brass); glass; wood

Dimensions

box breadth 254mm; depth 268mm; height 141mm; stand case length 380mm; breadth 390mm; height 310mm

Special Collection

Provenance

Purchased from Royal Astronomical Society, London, England, 1984. Purchased with the assistance of a grant from the Preservation Fund, Science Museum (PRISM). Given as a bequest to Royal Astronomical Society by A.C. Allen, 1945

Inscription

‘ADAM HILGER LTD
LONDON’

‘ALLEN
1’ [on box label]

Description Notes

Oxidised brass clockwork coelostat. Front-silvered glass mirror, circular, mounted with screw-fit brass retaining ring on axis in fork-type mount, push-fit cover to mirror. Axis connected to brass-cased clockwork movement, spring-loaded winding aperture, screw-fit plyg gives access to rating adjustment. Equatorial mount, clamp, latitude scale divided 0 - 90˚ by 1˚. Screw attachment to pillar stand, tribrach base with brass levelling screws. Two boxes. Winding key.

Condition

References

Joshua Nall; ‘The Sun Worshippers’; Explore Whipple Collections online article; Whipple Museum of the History of Science; University of Cambridge; 2020: https://www.whipplemuseum.cam.ac.uk/explore-whipple-collections/astronomy-and-empire/sun-worshippers

Events