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Images From Large Schmidt Telescopes

Published online by Cambridge University Press:  12 April 2016

D.S. Brown ,
C.N. Dunlop  and
J.V. Major
D.S. Brown
Affiliation:
Grubb Parsons Ltd., Walkergate, Newcastle upon Tyne, U.K.
C.N. Dunlop
Affiliation:
Department of Physics, The University, Durham, U.K.
J.V. Major
Affiliation:
Department of Physics, The University, Durham, U.K.

Abstract

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Calculations have been made of the intensity distribution of star images formed at the focal surface of large Schmidt telescopes. The calculations take account of atmaspheric seeing, aperture diffraction, manufacturing errors, chromatic errors in the corrector plate, scattering in the emulsion, photographic response and grain structure. The results are expressed in terms of simulated microdensitometer scans across the processed emulsion.

Results are given for a system S1(1.24m, f/2.5) similar to the 48" U.K. Schmidt (with both singlet and achromat corrector plates) for several combinations of correctors and filters using Illa-J emulsion for recording. The improvement in performance expected from the use of larger Schmidt telescopes is discussed and results are given for two designs with 2.5 metres aperture, S2(2.5m, f/2.5) and S3(2.5m, f/3).

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 78: Astronomy with Schmidt-type telescopes , 1984 , pp. 185 - 192
Copyright
Copyright © Reidel 1984

References

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