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Comparison of lunar reductions, 1887 - 1890

Reference Code: GBR/0180/RGO 6/573

Scope and Contents

Corrected comparisons of P.A. Hansen's lunar reductions. The volume includes the Moon's errors, 1847-1855, as observed with the transit circle and altazimuth; comparisons of original and new computations; transit circle and altazimuth computations, 1847-1861, with Marth's corrections; and the corrected value of longitude error and errors of the Moon's tabular place in longitude and ecliptic north polar distance. There are some extra miscellaneous computations and letters by J.C. Adams, J.R. Hind, W.H.M. Christie and H.H. Turner.


  • Creation: 1887 - 1890


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 volume(s) (1 volume)

Language of Materials


Former / Other Reference


Finding aid date

2006-01-06 11:50:46+00:00

Includes index.

Repository Details

Part of the Cambridge University Library Repository

Cambridge University Library
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Cambridge CB3 9DR United Kingdom