Jasper County Democrat, Volume 11, Number 59, Rensselaer, Jasper County, 26 December 1908 — FLAW IN BIG SOLAR GLASS [ARTICLE]

FLAW IN BIG SOLAR GLASS

Authorities at Mount Wilson Observatory Have Unpleasant Surprise. Pasadena, Cal., Dec. 25. —An unpleasant surprise greeted the authorities of the Mount Wilson solar observatory when the 100-inch glass, the largest ever cast, was unwrapped from its packings. After the first grinding began a large flaw was found, so that the casting will have to be thrown away and a new ohe made. This will delay for many months the construction of the great eight-foot reflecting mirror. The casting of the glass disk was made in Goblain, France, and the cost was $50,000.