| 摘要 |
PCT No. PCT/EP90/00889 Sec. 371 Date Dec. 6, 1991 Sec. 102(e) Date Dec. 6, 1991 PCT Filed Jun. 5, 1990 PCT Pub. No. WO90/15352 PCT Pub. Date Dec. 13, 1990.A reflecting telescope is described, in which the surface of the primary mirror is in the form of a pitch circular surface of a hypothetical, rotationally symmetrical large mirror. The optical axis parallel to the incident optical path and the focal point of the primary mirror and the large mirror are consequently identical. The primary mirror or pitch circular surface are located alongside the optical axis, so that all the optical and mechanical aids to be arranged in the vicinity of the focal point can be located outside the light incidence area and the reflection field, without optical correcting means being required.
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