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Pairs of Spherical Mirrors as Field Correctors for Paraboloid Mirrors

Published online by Cambridge University Press:  25 April 2016

N. J. Rumsey
N. J. Rumsey*
Affiliation:
Physics and Engineering Laboratory, DSIR, New Zealand
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Extract

The paraboloid primary mirror of a classical reflecting telescope gives an image that is perfectly corrected for spherical aberration and free from chromatic aberration. However, the image suffers from coma, astigmatism and field curvature. These aberrations severely limit the usable field. For example, the primary mirror of the 200 inch telescope gives an acceptable image of a field with a diameter of only ~2’ arc.

Type
Contributions
Information
Publications of the Astronomical Society of Australia , Volume 2 , Issue 1 , July 1971 , pp. 22 - 23
Copyright
Copyright © Astronomical Society of Australia 1971

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References

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