An observer's-eye view of the Anglo-Australian telescope

Details An observer's-eye view of the Anglo-Australian telescope An observer's-eye view of the Anglo-Australian telescope

Oct 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975pasau...2..345g&link_type=abstract

(Astronomical Society of Australia, Annual General Meeting, 9th, Parkes, New South Wales, Australia, May 14-16, 1975.) Astronomi

Physics

Optics

1

Cassegrain Optics, Computer Techniques, Instrument Errors, Pointing Control Systems, Telescopes, Astronomical Observatories, Astronomical Photography, Australia, Automatic Control, Mechanical Drives, Systems Engineering, Technology Assessment

Scientific paper

The paper describes the features of the Anglo-Australian telescope as they appear to observers and is intended as a guide for formulating programs. Changes in the original design specifications of the telescope are discussed along with the instrument's optical characteristics, drive, and control system. It is shown that the pointing accuracy is 3 arcsec rms at prime focus and 4 arcsec at the f/8 Cassegrain, that this accuracy holds for zenith distances up to 65 deg, and that it is achieved with a minimum of disposable constants. Special features noted include a provision for making differential movements of several hundred seconds in right ascension and declination with an accuracy of about one tenth of a second, the capability for carrying out any programmable sequence of movements, and computer control of the image-dissector scanner and the two-channel photometer. Some performance data are given for direct photography.

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