1986-10-22
1989-04-18
Henry, Jon W.
350504, 350319, G02B 1706, G02B 718, G02B 2306, G02B 2316
Patent
active
048221562
ABSTRACT:
A reflecting telescope according to the invention includes a tube having an inlet and a primary mirror end. A plurality of mirror segments cooperate to form a single mirror of a single paraboloid-shaped surface by grinding the mirror segments all together in a single grinding process. This mirror is then positioned at the primary mirror end of the tube. Each of the plurality of mirror segments has a circular disk shape and is arranged in one of circular tracks, each circular track being defined by an inner circle and an outer circle with each inner and outer circle being concentric to the tube central axis. The areas free of mirror segments lie between the mirror segments of circular disk shape and an innermost area free of mirror segments lies within an innermost circular track. Bearings are positioned about each of the mirror segments at the areas free of mirror segments for adjustment of the mirror segments. A system of mounting bars is positioned and connected to the primary mirror end at the areas free of mirror segments, such that light entering the inlet end causes shadows to be cast by the system of mounting bars on the areas free of mirror segments. A plurality of observation cages may be positioned in the innermost area free of segments posed to be positionable between the mirror end and the inlet to provide different modes of observation. A deviation mirror may be provided for reflecting light which has been directed towards the observation cages.
REFERENCES:
patent: 3502387 (1970-03-01), Hadley
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