Correspondence on instruments, 1915 - 1930
Scope and Contents
Miscellaneous correspondence regarding astrographical instruments, heliographs and micrometers, including the following material:
Correspondence with Sir Harold Grubb and Sons on the repair of the clock of astrographic equatorial, 1919-1920.
Correspondence with Professor Turner on the supply of a réseaux, and with Cooke, Troughton and Simms on a photoheliograph, 1915-1925.
Correspondence with the Mount Wilson Observatory on a spectrohelioscope, 1929-1930.
Correspondence with Sir Howard Grubb and Sons on the repair of the 13-inch astrographic telescope, 1930.
- 1915 - 1930
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1 bundle(s) (1 bundle)
Language of Materials
Former / Other Reference
Finding aid date
- From the Series: Dyson, Frank Watson, Sir, 1868 - 1939 (Knight, astronomer) (Person)