Page 19 Advertisements Column 2

Hawke's Bay Herald-Tribune, Issue 13, 30 January 1937, Page 19

An. eight-inch reflecting ' telescepe and an observa'tory oh ' the grounds of a school at. Greenwich, Connectieut, U.S.A., was designed.and built entirely by the^ studente... Working in the school , science.- laboratories, the boys mado- each -ieleseppe part piece by piece, :.relying " on their studies in mathematics and physics for accuracy in--gear "ratios, "glaSs~grinding and astronoffiical c'Ulculations^ Long hours qf labour went into excavating, Greeting forms ^and pouring concrete fdr the Circnlar' walls of the observatory- base. The reflecting iriirror 'was ground from a ship 's glass^ porthole ' c6ver, one inch thiek and eight inches • in diameter, while the 20001b. dome was made from twenty-four curbed ribs, which were covered with wood and sheathed with thin sheet copper. The dome was built separately in a school workshop, and moved in one piece to the observatory site. Sliding shutters eover the aperture cut into the dome, through which the telescope tube protrudes.