Copy of 'Monthly Notices of the Astronomical Society of South Africa', Vol. 24 (1965), containing an article by David Thomas titled 'An Astrolabe for the Cape Observatory'. The article describes the Danjon Astrolabe and its advantages over other similar instruments.

Booklet commemorating 150 years of the Cape Observatory, edited by J. D. Laing. With sections on the history of the Observatory, equipment and observing programmes, and outline of South African astronomy. Many pages include handwritten annotations.

Papers from a file labelled 'Division of Transits and Zones (1H; x 10) Plot of RA and DECS'. Comprises 12 sheets forming one large graph titled 'Stars for astrolabe between -3.46 and -64.06 and brighter than 5.5'.

Papers from a file labelled 'Astrolabe Catalogue Coordinates'. Comprises sheets of tabulated data including group; number; magnitude; east or west; right ascension; declination; RV km/sec; Scott 4 or FK4 catalogue number.

Papers from a file labelled 'Cape Astrolabe Programme'. Comprises notes on Cape Astrolabe standard groups; estimated capacity of the Cape Astrolabe programme; symmetry considerations for astro standard groups; graph entitled, 'Expected clear sky at Cape'; and assorted rough notes.

Papers from a file labelled 'Cape Astrolabe "seeing" investigation'. Comprises sheets with atmospheric conditions for days from 15 March 1965 to 14 March 1969.

Papers from a file labelled 'Cape Astrolabe Reglage Investigations'. Comprises papers, graphs plotted from 21 April 1965 to 31 July 1967, and tables of figures for dates up to 20 November 1968.

Comprises graphical results detailing right ascension and declination, and a note from R. H. Tucker listing individuals who would be interested in receiving copies of the results.

Photocopy of an article titled 'Cape Astrolabe Campaign (1964-69): Final Results' by D. V. Thomas, dated 1979. Also includes photocopies of computer printouts of stage 2 results for FK4 stars. Columns are headed as following: [NoCat]; Mag.; RA; Dec. (1950); AZ; Number; ZD corr[ection]; No Obs; RA corr[ection]; Dec corr[ection].

Papers from a file labelled 'Cape Astrolabe Preliminary Catalogue Corrections'. Comprises sets of tabular figures and graphs. The sets of papers were labelled as follows: 'Type 1, standards, FK4 only'; Type 2, FK4 catalogue stars'; 'Type 3, Scott catalogue stars'. Papers in set 1 are dated 30 June 1967; papers in set 3 are dated 31 December 1966.

Comprises documents titled as follows: 'Preliminary Analysis of Cape Astrolabe Results (1-4)'; 'Cape Astrolabe: PV and SV Corrections'; 'Cape Astrolabe: Preliminary Catalogue Corrections'; 'Saturn'; 'Checking 287A Output'; 'Astrolabe Time Results'.

Papers from a file labelled 'Preliminary Analysis of Cape Astrolabe Results: (a) Analysis of Prism Angles'. Comprises document titled 'Summary of Cape Astrolabe Reduction Scheme' tables of figures and calculations, and graphs.

Papers from a file labelled 'Preliminary Analysis of Cape Astrolabe Results: (b) Approximate Values of ZDCRNA for Standard Stars'. Comprises two documents of tabulated figures, 'Mean Dzeta Values of Standard Stars' and 'ZDCRNA'.

Papers from a folder labelled 'Preliminary Analysis of Cape Astrolabe Results: (c) Analysis of Time Results'. Comprises tabulated sets of figures.

Papers from a file labelled 'Preliminary Analysis of Cape Astrolabe Results: (d) Analysis of Latitude Results'. Comprises tabulated figures and calculations.

Papers from a file labelled 'Cape Astrolabe Mean Time Results'. Comprises tabular figures of UT (observed) - UT (def).

Papers from a file labelled 'Cape Astrolabe Mean Latitude Results'. Comprises tabulated figures and graphs giving mean and observed latitudes.

Three sets of papers labelled 'Cape Astrolabe Prism Angles (preliminary rough look)'; 'Analysis of Cape Astrolabe Prism Angles a(iii) and a(xi) - a(xv)'; and 'Analysis of Cape Astrolabe Prism Angles'. Comprises notes on method of analysis, tabulated data and graphs.