Accession No

3720

Brief Description

set of diaphragms

Origin

Maker

Class

optical

Earliest Date

Latest Date

Inscription Date

Material

metal (brass); hide (leather)

Dimensions

case length 113mm; breadth 89mm; thickness 15mm

Special Collection

Provenance

Transferred from Institute of Astronomy, University of Cambridge, Cambridge, England, 1988.

Inscription

‘SPO 137 [then a number from 1 to 7 for each]’ (on top of each)

Description Notes

Seven diaphragms with apertures from 8 to 71mm, taken from an instrument from the Solar Physics Observatory. All made of brass. Contained in a leather case.

Condition: fair (leather case in poor condition); complete.

References

Events