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Pairs of Spherical Mirrors as Field Correctors for Paraboloid Mirrors

  • N. J. Rumsey (a1)

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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.

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1 Ross, F. E., Ap. J., 81, 156 (1935).
2 Wynne, C. G., Applied Optics, 4, 1185 (1965).
3 Meinel, A. B., Ap. J., 118, 335 (1953).
4 Wynne, C. G., Applied Optics, 6, 1227 (1967).
5 Paul, M., Revue d’ Optique, 14, 169 (1935).
6 Baker, J. G., I.E.E.E. Trans., AES-5, 261 (1969).

Pairs of Spherical Mirrors as Field Correctors for Paraboloid Mirrors

  • N. J. Rumsey (a1)

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