A reflecting telescope, originally ordered by the Imperial Russian Government, is now being com pleted for the Soviet, Government by Sir Howard Grubb Sons? works at St. Albans. It has an aperture of one metre (neatly 40 inches), and a focal length of five metres.
The mirror, which is of glass, is 40} inches in diameter and eight inches thick and weighs about £00, pounds and has been polished and figured under the personal Supersision of Sir Howard Grubb. All the motions of the telescope amd dome ave electrically: worked and operated by means of push buttons from any eotivenient position. The moving parts of the telescope weigh between four and five. tons, the weight of the complete instrament being about nine tons.
The height from the base of 90 per cent. his money, assum- the telescope to the top of the ing' of course that. ho kept them, tube, when the Intter is: pointing
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