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Papers on optics and navigation, 1884 - 1900

Reference Code: GBR/0180/RGO 7/233

Scope and Contents

Undated ink drawing of Fraunhofer's solar spectrum.

General correspondence concerning optics, relating mainly to telescopes, 1884-1894, including two copies of the Admiralty Telescope Contract, 1884; a copy of Patent No. 17994 of 1892: 'Improvements in Compound Object Glasses for Telescopes' by H.D. Taylor; W.J. Watson on increasing the power of a telescope; D.F. Webster on the reflection of the Moon in a mirror; Ralf Sadler on improvements to object glasses; and W.H. Duncan on water telescopes.

General correspondence concerning telescopes, etc., 1893-1900, including R. Sadler on object glasses; G.G. Stokes on the need for guiding telescopes in astrophotography; G.H. Lastrie on the rules of triangulation and horizon distances; and J.C. Beltingham on the theory of vision in a telescope.

Papers and correspondence concerned mainly with the testing of telescopes, 1888-1892, including a file of correspondence on the testing of Royal Navy telescopes and binoculars; Dr Parsons on evidence of eye power increasing with use; and an undated memorandum by the Astronomer Royal concerning a convertor for the 28" telescope.

File of correspondence on navigation, 1892-1894, including J. Bannister on the history of navigation; Captain Straker on the distance and bearings of distance lights; and H.D. Paine on a device for correcting the error of compasses.


  • Creation: 1884 - 1900


Conditions Governing Access

From the Management Group:

Unless restrictions apply, the collection is open for consultation by researchers using the Manuscripts Reading Room at Cambridge University Library. For further details on conditions governing access please contact Information about opening hours and obtaining a Cambridge University Library reader's ticket is available from the Library's website (


1 bundle(s) (1 bundle)

Language of Materials


Former / Other Reference


Finding aid date

2006-03-30 10:51:11+00:00

Includes index.

Repository Details

Part of the Cambridge University Library Repository

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