Browse Items (71 total)
Sort by:
Photoelectric photometer filters
Wood, metal, glass
Small wooden box (4 ¾ x 2 ¾ x 2”), 11 shades, some marked .66, .86, 1.31, 1.56, 1.80, 2.95, 4 unlabeled. Possibly 1917.
Made reference to use of shades in several papers including Nova Aquilae and Algol (1921).
Small wooden box (4 ¾ x 2 ¾ x 2”), 11 shades, some marked .66, .86, 1.31, 1.56, 1.80, 2.95, 4 unlabeled. Possibly 1917.
Made reference to use of shades in several papers including Nova Aquilae and Algol (1921).
Conical log-spiral antenna
Wood, metal
Base is 8-inch in diameter and it is 19 ½ inches long.
Design of the array element was done by Professor John D. Dyson. Installed on the Vermilion River Radio Observatory's 400 x 600 foot cylindrical radio observatory, in operation…
Base is 8-inch in diameter and it is 19 ½ inches long.
Design of the array element was done by Professor John D. Dyson. Installed on the Vermilion River Radio Observatory's 400 x 600 foot cylindrical radio observatory, in operation…
Astro-Camera 220 and Duetron double eyepiece
Wooden box (9 ½ x 7 x 7) with hinge lid, three 2-sided film holders. It takes 2 ¼-inch by 3 ¼-inch glass plates or sheets of film. An air-operated shutter types speeds of 1/10 to 1/90 second in addition to bulb and time. Comes with ground-glass…
National Historic Landmark plaque
The University of Illinois Observatory is historically significant for the development of selenium and photoelectric cell photometry that revolutionized the measurement of celestial magnitudes. The determination of stellar magnitudes is one of the…
2-inch altitude-azimuth universal telescope
Wood, metal, glass
Stored in 2 large wooden boxes (22 ¼ x 12 ½ x 14 ¼ and 22 x 22 ½ x 17 inches). Transit consists of base with three leveling screws, telescope, striding level, 3 eyepieces, several lens caps for the eye pieces and an objective…
Stored in 2 large wooden boxes (22 ¼ x 12 ½ x 14 ¼ and 22 x 22 ½ x 17 inches). Transit consists of base with three leveling screws, telescope, striding level, 3 eyepieces, several lens caps for the eye pieces and an objective…
6-inch f/16 equatorial refractor by Jeslerski
Metal, brass, glass, wood
Donated by Mrs. Ruth Scott of Chrisman Illinois in 1971. Equipped with solar filter, diagonal, slow motion, 60 mm guide telescope, 25 and 50 mm finders, equatorial mount on heavy movable wooden tripod. Valued at $1,500 in…
Donated by Mrs. Ruth Scott of Chrisman Illinois in 1971. Equipped with solar filter, diagonal, slow motion, 60 mm guide telescope, 25 and 50 mm finders, equatorial mount on heavy movable wooden tripod. Valued at $1,500 in…
Postcard "Observatory"
Looking south toward the north entrance of the Observatory. The transit telescope is visible in the window of the western most transit room. This transit telescope had an objective of 2-inch diameter and was made by Newton & Company of London,…
Compass
There are three Astro Compass Mark II, in green wooden boxes with canvas handles. It can be pointed at a known star, including the sun, and used to indicate true north. Manual included.
Heliostat foucault
Metal, glass
Also Foucault siderostat. Marked “Societe Genevoise, pour la construction, D’instruments de physcique, Geneve.” Wind up drive does not work. Spirit level on black metal base with 3 leveling screws.
Siderostats are used with a…
Also Foucault siderostat. Marked “Societe Genevoise, pour la construction, D’instruments de physcique, Geneve.” Wind up drive does not work. Spirit level on black metal base with 3 leveling screws.
Siderostats are used with a…
Self winding clock
Wood, metal, glass
Purchased by the Astronomy Club in 1985 at an estate sale, the clock was missing the dial and door but still retained the wooden case, paper instructions, wires, hands, pendulum, and clock mechanism. In 2011, Dr. Bruce Hannon…
Purchased by the Astronomy Club in 1985 at an estate sale, the clock was missing the dial and door but still retained the wooden case, paper instructions, wires, hands, pendulum, and clock mechanism. In 2011, Dr. Bruce Hannon…