Browse Items (71 total)
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Sextant and artificial horizon
Wood, metal, glass
Sextant:
Wooden box with hinged lid, inside includes Keuffel & Esser paper label and “obs 15” mark. Sextant matched with artificial horizon A214.2.
Black metal frame, wood handle, silver scale, maker marked on index arm,…
Sextant:
Wooden box with hinged lid, inside includes Keuffel & Esser paper label and “obs 15” mark. Sextant matched with artificial horizon A214.2.
Black metal frame, wood handle, silver scale, maker marked on index arm,…
Marine sextant
In the Keuffel & Esser catalog , model 5224D on page 410, cost, $80. Paper label includes model 5224D and serial number 42046. Gun-metal, measuring angles up to 130 degrees, radius 6-in graduated on solid silver to 20 minutes, vernier to 30 seconds.…
Double frame bridge sextant
Wood, metal, glass
Fitted keystone wood box with hinged lid and two hook latches. Black metal frame with brass screws, silver scale and wood handle. Includes 3 black painted telescopes, 1 eyepiece cover, 8-½ inch radius, eyepiece to read vernier,…
Fitted keystone wood box with hinged lid and two hook latches. Black metal frame with brass screws, silver scale and wood handle. Includes 3 black painted telescopes, 1 eyepiece cover, 8-½ inch radius, eyepiece to read vernier,…
Sextant and artificial horizon
Wood, metal, brass
Hinged box with lock, missing handle, inside lined with green felt, green paper Newton label. University tag crossed out in pen.
Sextant valued in 1908 estimated $50. Engraved on arc “Newton + Co 3 Fleet Street London.” Black…
Hinged box with lock, missing handle, inside lined with green felt, green paper Newton label. University tag crossed out in pen.
Sextant valued in 1908 estimated $50. Engraved on arc “Newton + Co 3 Fleet Street London.” Black…
Magic lantern slides
Wood, glass, metal
In 2 wooden boxes, hand painted glass slides in mahogany wood, several with moving parts, total of 35 lantern slides. Similar collections on-line have them made of mahogany, with brass handles and movements, stamped and…
In 2 wooden boxes, hand painted glass slides in mahogany wood, several with moving parts, total of 35 lantern slides. Similar collections on-line have them made of mahogany, with brass handles and movements, stamped and…
Engineer transit telescope
Metal, glass, wood
There are two transits. The first is transit includes compass and is marked no. 898. Objective is 1-inch diameter and tube is 8” long. One frosted glass shade is missing.
The second transit is marked no. 862 and comes with a…
There are two transits. The first is transit includes compass and is marked no. 898. Objective is 1-inch diameter and tube is 8” long. One frosted glass shade is missing.
The second transit is marked no. 862 and comes with a…
Lantern slide "U of I Eclipse station 1918, Rock Springs, Wyoming"
One of over 1000 lantern slides in the Observatory's collection. Labelled "E1" this is a photograph of the photoelectric photometer Dr. Joel Stebbins and Dr. Jakob Kunz used to observe the solar eclipse on June 8, 1918. The photograph also appeared…
Lantern slide 'U of I 30 inch reflector'
Lantern slide of the 30-inch reflecting telescope purchased in 1914. The mirror had a focal length of 20-inches and was made by John Brashear. The mount might also be by Brashear. This lantern slide is part of the Observatory's collection and is…
Lantern slide 'Potassium Photoelectric cell'
Lantern slide of a photoelectric cell made by Jacob Kunz. Part of the Observatory's lantern slide collection, marked "PE 5."
Lantern slide 'Photoelectric photometer on 12-inch telescope (1925)'
Lantern slide of the photoelectric photometer around 1925. From the Observatory's lantern slide collection, marked "PE 2." Robert Baker continued Stebbin's photometry work when he arrived at Illinois in 1923. He continued to use the 12-inch…