Word: instruments
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Dates: during 1890-1899
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...photographic telescope of such a nature that eight plates, eight by ten inches each, can be exposed in succession without disturbing the telescope. The telescope is regulated by clock-work and is designed to photograph all the bright stars that cross the meridian during the night. This instrument is much more powerful than the one of similar construction which has been in use at the Observatory during the last few years...
...negative has not shown that any other system would work. They have almost failed to even touch the question. If any advantages are to come from what these gentlemen say, it is more money. That might apply to conditions years ago, but not now. Now, credit is the chief instrument of effective exchanges, dependent only upon a definite standard...
...eight-inch photographic telescope for the observatory is in process of construction. It is called a doublet, or rectilinear instrument, from the fact that it is to contain two object glasses, by which the linear distortions caused by ordinary lenses are nearly eradicated. The new telescope differs from the present Draper instrument in that it will take successive stellar photographs automatically, changing and exposing the plates according to the particular programme decided upon. The charts produced will be about eight inches square...
...station at Arequipa, Peru, where the Bruce telescope was moved last winter, is now under the personal direction of Professor Bailey. The difficulties met with in setting up the instrument, owing to its great size and weight, have been finally overcome. Professor Bailey has photographed a large number of excellent stellar charts of which some very fine specimens have been received in Cambridge. The main station at Arequipa controls many meteorological posts in the neighboring country. The most important of these is situated on the summit of the volcano El Misti, 19200 feet above the level...
GUITAR for sale, with case; very fine instrument. Address, X, CRIMSON office...