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Post card 'Radio telescope at the Vermilion River Observatory'
Post text: "Radio telescope at the Vermilion River Observatory, University of Illinois. Giant radio telescope 600 feet long, 400 feet wide. A wire mesh on the surface reflects cosmic signals to 274 antennas on the wooden truss, 153 feet high. It is…
Tags: radio telescope
Sidereal clock, no. 22
Wood, metal, glass
Wooden mahogany case, there was a spare wooden case, height 59.25 cm, width 44 cm, depth 20 cm. There are two front glass doors, one for the dial and one for the pendulum. The sides are wood paneling for the pendulum and glass…
Wooden mahogany case, there was a spare wooden case, height 59.25 cm, width 44 cm, depth 20 cm. There are two front glass doors, one for the dial and one for the pendulum. The sides are wood paneling for the pendulum and glass…
Tags: clock
Reading telescope
Metal, glass
Eyepiece with crosshairs, 12-inch tall, 11-inch long, tube 1-inch outer diameter, missing an objective lens.
Used with galvanometer to read the reflection off the mirror.
Eyepiece with crosshairs, 12-inch tall, 11-inch long, tube 1-inch outer diameter, missing an objective lens.
Used with galvanometer to read the reflection off the mirror.
Tags: galvanometer
Radio receiver
Metal, glass
In 1914, the Observatory was connected to a wireless apparatus to receive radio time signals. The apparatus consisted of one wire 650 feet long stretching from the Observatory to the Auditorium to Lincoln Hall. In 1964, the antenna…
In 1914, the Observatory was connected to a wireless apparatus to receive radio time signals. The apparatus consisted of one wire 650 feet long stretching from the Observatory to the Auditorium to Lincoln Hall. In 1964, the antenna…
Tags: radio receiver
Bubble sextant
Wood, metal alloy, plastic
Marked property Air Force-US Navy, type A-10A. Probably WW II era. Blackened aluminum casting, containing clockwork, lenses, mirrors, buddle level, and rubber eyecup. In fitted wooden box. A small rugged aircraft…
Marked property Air Force-US Navy, type A-10A. Probably WW II era. Blackened aluminum casting, containing clockwork, lenses, mirrors, buddle level, and rubber eyecup. In fitted wooden box. A small rugged aircraft…
Tags: sextant
Lantern slides 'Beta Lyrae'
Both of these lantern slides were used by the first director, George W. Myers, at the conference opening Yerkes Observatory held October 18-21, 1897. Myers' work, "The system of Beta Lyrae" was published in the Astrophysical Journal in 1898 (vol. 7,…
Tags: education
Cabin sidereal clock
Aluminum, brass, glass
There are two sidereal clocks, both are electric. The first is 9 ½-inch diameter with a 8-inch dial, black metal base, brass and glass, 3 hands.
The second smaller clock 5 ¼-inch diameter, tag indicates a date of…
There are two sidereal clocks, both are electric. The first is 9 ½-inch diameter with a 8-inch dial, black metal base, brass and glass, 3 hands.
The second smaller clock 5 ¼-inch diameter, tag indicates a date of…
Tags: clock