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Founded in 1750. Here Wargenxin made that long series of obser-vation on Jupiter ’s satellites which resulted iu the first reliable tablesof eclipses of these satellites.
Instruments :
(a) Meridian circle: Makers, Ertel & Son ; diameter of circles, 18inches; divided to 3'; read by 4 microscopes to 1"; aperture of objective,4.| inches (0.107 meters); magnifying power ordinarily employed, 124diameters.
(b) Meridian transit instrument : Maker, A. Eepsold ; aperture, 2J-inches.
(e) Equatorial instrument: Maker, A. Eepsold; aperture of objective,7 inches; magnifying powers of eye pieces, 114, 150, 190, 302, GOO,
(/) Chronographs: Two.
(g) Cloclcs: Mean time; makers, Molyneux & Cope ; sidereal;makers, Kessels, Sweder.
(h) Chronometer: Meantime; makers, Dent, Linderotii.
Stonyiiurst College (near Wiialley), England.
Stonyhurst College Observatory.
Longitude from Greenwich, 9 m 52.08 s W.
Latitude, 53° 56' 40" N.
Authority for longitude and latitude : Nautical Almanac.
Directors: Eev. A. Weld, S. J., E. E. A. S., 1838.
Eev. S. J. Perry, S. J., F. E. A. S., I860 .
Location: Four miles W. of Whalley, Lancashire , England.
Height above sea, 381 feet. Built in 1838 iu the park of the JesuitCollege.
Instruments :
(a) Meridian circle: By Jones; 2 feet G inches; divided to 5'; micro-scopes reading to 1"; aperture of object glass, 3 inches; power gen-erally used, 50.
(b) Transit instrument: Aperture of object glass, 2-§ inches; powergenerally used, 42; by Cary.
(c) Equatorial instruments-. One by Napier, Curry, Troughtonand Simms; aperture, 8 inches; powers from 30 to 600 or 700; one byJones; aperture, 4 inches, (o') A Cassegrain refiector; aperture, 9£inches; two, Newtonian; aperture, 7 inches.
(d) Spectroscopes : An automatic instrument by Browning, G prismsof G0°, each used twice, with a half prism, making largest disper-sion=:3G prisms of G0°. A large star spectroscope by Simms, 4 com-pound prisms by Hoffman. A large direct-vision spectroscope byBrowning. Two smaller instruments by Browning.
(/) Chronograph: Small one by Breguet.
(g) Clocks: Two sidereal, mercurial pendulums.