Scope and Contents A copy of a letter from D.C. Martin to members of the British National Committee for Astronomy, 29 December 1953, asking them for their views on an attached memorandum by Redman on the proposed Southern Hemisphere Observatory before he attends a meeting in Leiden on 25 January. There are copies of the replies received from J. Jackson; W.H. McCrea, Royal Holloway College; T.G. Cowling, Leeds University; H. Spencer Jones; D.H. Sadler, H.M. Nautical Almanac Office; H.H. Plaskett, Oxford...

Scope and Contents Correspondence with Donald Sadler, including copies of official correspondence between H.M. Nautical Almanac Office and the U.S. Navy N.A.O. The subjects include the use of 'Nautical Almanac' material in the B.A.A. Handbook, with some mention of the copyright position and reproduction fee; the recomputation of Crommelin's Perturbation Tables, mentioning the use of (human) computers in the N.A.O. and British Astronomical Association in September 1947; the use of 'National Machines' in this...

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A letter from H. Knox-Shaw to Sir Frank Dyson enclosing an summary of W.H. Steavenson's 'seeing' results in Pretoria and results from Mount Wilson and comparing the two. The letter also discuss an article on the Radcliffe Observatory proposed for 'Nature' magazine.

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A copy of a letter from Sir Frank Dyson to H. Knox-Shaw acknowledging the receipt of RGO 48/3 and asking that arrangements be made for W.H. Steavenson to borrow the Cooke 6-inch telescope and to pay the necessary expenses. The text is quite faded.

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A copy of a letter from the Radcliffe Observatory, Oxford, to W.H. Steavenson regarding the viability of observation tests being carried out in Pretoria with a view to determining the future performance of a 24-inch telescope.

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A letter from W.H. Steavenson, British Astronomical Association, describing a method of measuring position angles and making a simple transit instrument.

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A letter from W.H. Steavenson, Pretoria, to Sir Frank Dyson regarding Dyson's arrival in South Africa and the setting up of the 6-inch telescope.

Scope and Contents Letters from Arthur Burnet, University Observatory, Oxford, giving star positions, many details of planetary occultations of stars and Jupiter's satellites and the phenomena of Jupiter's satellites. There is mention of calculations for occultations by Saturn and Jupiter; the loan of copies of the 'Leeds Journal' and star catalogues; an observation of an occultation made by Steavenson on the Greenwich 28-inch telescope; a note for 'Popular Astronomy' and the 'Harvard Bulletin'; and Burnet's...

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Copies of two letters from Porter to W.H. Steavenson regarding old style and new style calendar conversion and the position angles of Ariel (Uranus I).

Scope and Contents Papers relating to Radcliffe Observatory, Pretoria, including the following material:Correspondence between Theodore Dunham and Sir Harold Spencer Jones regarding plans for a coudé spectrograph at Pretoria, 1951.Correspondence with H. Spencer Jones regarding staff and instruments at the Radcliffe Observatory, 1950.Correspondence with the Trustees of the Radcliffe Trust and letters concerning the Trust, 1950.Letter from H.H. Plaskett, University Observatory,...