| Description | Essentially covers three astronomical instruments and their genesis. Correspondence, notebooks, photographs and promotional materials document the Narrabri Stellar Intensity Interferometer (NSII). The story of the successor instrument, the Sydney University Stellar Interferometer (SUSI), is represented chiefly by photographs of an early model showing a Very Large Stellar Intensity Interferometer, a subsequent proposal of a Michelson interferometer, and discussions between Hanbury Brown and John Davis. There is also correspondence regarding the AAT and the future of science and engineering in the University of Sydney. |