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This generous gift, which has been gratefully accepted, should enable the telescope to be completed and brought into use some two or three years before it would otherwise have been possible. disk for a secondary mirror and the central plug from the large disk, to the Royal Greenwich Observatory, for use in the Isaac Newton telescope. Here are some advantages of reflecting telescope from optics and light They are inexpensive to make. This telescope focuses all the light from a curved mirror. He built the world’s first reflecting telescope. Judge Henry Hulbert, president of the Trustees of the McGregor Fund, informed the Astronomer Royal that the Trustees had unanimously resolved to make an outright gift of the disk, together with a 26½ -in. Sir Isaac Newton also accomplished himself in experimental methods and working with equipment. Its cost had been defrayed from the McGregor Fund. The disk, which was cast before the War by the Corning Glass Co., was originally intended for use in a large reflector for the Michigan Observatory, a project which for various reasons was later abandoned. The Isaac Newton Group of Telescopes (ING) is located in the Spanish Observatorio del Roque de los Muchachos on La Palma, Canary Islands, which is operated. 'Pyrex' glass disk for use in this telescope. Sir Issac Newton (1643- 1726) was an English mathematician, physicist and scientist. During his visit he received the gift of a 98-in. SIR HAROLD SPENGER JONES, Astronomer Royal, has recently spent three months in the United States, at theinvitation ofmany American astronomers, in course whichhe visited most of the astronomical abservatories, studying programmes of work and, in particular, the design and performance of large telescopes in connexion with the design, now under consideration, of the Isaac Newton reflector.