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Updated: June 3, 2025
Its construction was of the Newtonian kind, the observer looking into the side of the tube near its upper end, which a series of galleries and sliding stages enabled him to reach in any position. It has also, though rarely, been used without a second mirror, as a "Herschelian" reflector. The splendour of the celestial objects as viewed with this vast "light-grasper" surpassed all expectation.
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