Abstract
The New Telescope for Edinburgh Observatory.—In Engineering for Sept. 6 and 20, and Oct. 4 and 18, is a description of the 36-in. reflecting telescope for Edinburgh Observatory, made by Messrs. Sir Howard Grubb, Parsons and Co., to the specifications of Prof. R. A. Sampson, Astronomer Royal for Scotland. The article is accompanied by some fifty illustrations, many of them from working drawings, and with their aid it is possible to understand the construction of all the principal parts. The optical system is arranged on the Cassegrain principle, the main mirror being 36 in. in diameter, with a focal length of 15 ft. The Cassegrain mirror mounted near the upper end of the tube is 10 in. in diameter and is designed to give an equivalent focal length of 54 ft. in conjunction with the main mirror. The mounting is of the equatorial type, and the illustrations include sections through both polar and declination axes and the methods of driving and controlling the instrument.
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Our Astronomical Column. Nature 124, 665 (1929). https://doi.org/10.1038/124665a0
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DOI: https://doi.org/10.1038/124665a0