Working papers, technical drawings and diagrams on polarizing beam-splitting prisms. Includes: Correspondence from R.G. Giovanelli to R. Smartt, Sacramento Peak Observatory on beam-splitting prism with text, diagrams and data, 7 November 1979; Technical drawings "20 ft chromospheric telescope sliding prism housing" and "20 ft chromospheric telescope beam splitting mode"; Working notes on beam-splitting prism and camera unit, and "Flare patrol No.2 - Mark II", 5 February 1969

Working papers, technical drawings, catalogues, photographs and correspondence on telescopes. Includes: Working papers on 16 inch solar telescope including specifications; Catalogues and photographs of telescopes from optical engineering firms: Boller and Chivers, and Tinsley Laboratories; Correspondence on telescopes from: Don Hall, Kitt Peak National Observatory, Tinsley Laboratories and O.L. Goble, Kodak; Technical drawings of:- Sacramento Peak solar telescope, 16 inch Cassegrain telescope, 16 inch Coudé solar telescope, Culgoora Solar Observatory new electrical works

Technical drawings, circuit diagrams and photographs of blink comparator

Working papers, map and reprint. Includes: Working notes "Notes for presidential address - ANZAAS 1965"; Map of Australia with geographical index; Reprint "The sky and the weather, Australia, 1866-1966" by Harley Wood, 1968

Working papers, typescript, graphs and data. Includes: Working notes "Image restoration - photographic details", "Films for solar use, 17 February 1969", "The resolving power of seven films at different contrast levels"; Typescript "An approximate method of image restoration" by W.H. Steel

Typescript and working papers. Typescript "Reflections by anisotropic diffusers", n.d.

Working papers including notes and data. Includes: Working notes "The diffusion of light by media comprised of spherical particles", and "Diffuse reflection by a semi-infinite diffuser consisting of spherical particles", n.d.

Working papers, typescripts, photographs and correspondence. Includes: Typescripts "Long-path-difference interferometry using filtered light", and "Notes on monochromators involving Fabry-Perot interferometers used in series"; Working papers "Fabry-Perot interferometers - progress notes", 17 January 1962, "Notes on the feasibility of long-path difference interferometry", "Comments on long-path difference interferometry using filtered light"; Reprint "Atomic standards of length and time", by H. Barrell; Series of 26 solar photographs; Correspondence:- R.G. Giovanelli to Irvine C. Gardner, 5 January 1960, R.G. Giovanelli to Fred White, 3 November 1959

Working papers, technical drawings, photographs and correspondence relating to proposed Wollongong 18-inch telescope. Includes: Working papers "Proposed program for Wollongong 18-inch Cassegrain telescope", "Specification, Auxiliary instrumentation for the 18-inch telescope", "A consideration of a Ritchey Chre-tien system for the Wollongong telescope"; Technical drawings of "Proposed 18-inch telescope" and "Water cooled metal mirror"; Correspondence, R.G. Giovanelli to Francis Lord Manufacturing, 12 September 1968, R.G. Giovanelli to William E. James, 2 December 1968

Working papers, draft typescript, Reprints, Catalogues, photographic negatives, Computer printout. Includes: Working papers, "Velocities in chromosphere"; Typescripts:- "On the use of the 1/8 Å filter for velocity and magnetic field pictures", "The 1/8 Å birefringent filter", 23 August 1956; "The 1/8 Å birefringent filter for solar research; Reprints:- "On the optical properties of components for birefringent filters" by R.G. Giovanelli and J.T. Jefferies, "The birefringent filter" by John W. Evans 1954, Annales d'AstrophysiqueJanuary-April 1944, "études des filters polarisants de lyot pour l'observation de la chromosphere solaire" by A. Dollfus, "How to build a quartz monochromator for observing prominences in the sun" by Richard B. Dunn, "A ray-tracing program for birefringent filters" by J.M. Beckers and R.B. Dunn

Working papers and correspondence relating to filters and prisms and a variety of other topics. Includes: Working papers:- "Strengths of rollers in spar drive", "Deflections in equatorial spar and telescopic tubes", "Calcite calculations", "Selection of location for a solar observation station", "Mica absorption"; Correspondence, R.E. Loughhead to R.G. Giovanelli; Technical drawing "Cell for prominence birefringent filter, optical components"; Minutes of meeting, CSIRO Division of Radiophysics, 15 November 1951; Postcards and photographs; graphs

Working papers, reports, photographs, correspondence. Includes: Reports:- "Proposals for a grant for the cinematographic study of solar magnetic fields, October 1962, "Abstract report on the use of a water cooled Cer-Vit mirror for a solar telescope" by D. Groeneveld, "Preliminary report on foundation conditions at Narrabri, NSW, for CSIRO Division of Physics" by I.B. Donald; Working papers:- "Solar spectrum in neighbourhood of a, Zeeman shift set up", "The optical system for use with the Ramsay filter", 30 March 1968, "Cinemagnetograph specification", 20 March 1968, "New optical systems for the Fleurs Spar", 21 February 1968; Typescripts "Cinemagnetograph modifications, 5 February 1969 (2 copies), "Notes on monochromators involving Fabry-Perot interferometers used in series"; Several photographs of astronomical equipment, the sun and sunspots

Working papers, technical drawings, typescript. Includes: Typescript "Division of Physics, Proposed solar telescope", 9 March 1960; Technical drawings:- Solar telescope - "General assembly", "Details of tower", "Objective ARRGI", "2nd mirror, guider and seeing monitor and working space", "Photo-electric guider and seeing monitor", "Polar axis, Section through temperature controlled duct", "Spectrograph"; Working notes:- "Estimation of atmospheric effects", "Requirements for a 12" telescope and spectrograph"

Working papers, typescripts, photographs. Includes: Typescripts:- "Solar telescope and spectrograph", "The assessment of seeing"; Working papers "Solar telescope, Coordinates of image prints", "Guider", "The problem of the temperature of a slab of glass exposed to solar radiation", "Specification for spectrograph objectives", "The temperature uniformity in a large spectrograph"; 4 photographs of telescope at Sacramento Peak USA 1959; Memorandum to R.G. Giovanelli from R.J. Bray and R.E. Loughhead, 19 January 1959

Working papers, reprint, typescript, correspondence. Includes: Working papers:- "Photographic image process system", "Sunspot method of digital subtraction", "Acceleration of solar plasma"; Reprint "The motion of ionized gas in combined magnetic, electric and mechanical fields of force" by J.H. Piddington 1954; Typescript (untitled) by R.B. Black on "The limb darkening equation", 3 January 1969; Correspondence, Inwards from Harold Zirin, 16 October 1964, Kees de Jager, 15 October 1964, Z. Suemoto, 9 November 1964