Browse Items (20 total)

UofIselenium1910.jpg
Figure 1: Selenium cell in ice-pack attached to 12-inch refractor. Page 190.

Tags:

transitroom.jpg
Figure 2: Galvanometer and accessories for the selenium photometer. Page 191.

Visible in the photograph are the galvanometer, reading telescope, scale, batteries,Wheatstone bridge, and resistance boxes. Was located in the west-central transit…

Tags:

postcard2a.jpg
Looking southwest toward the north entrance of the observatory.

Vermillon Radio 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…

DSCN0342.JPG
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:

rosscamera.tif
Photograph of the 4-inch Ross-Fecker camera with the 4-inch Fauth refractor as the finderscope.

The instrument was a refractor of 4-inch aperture and 28-inch focal length (f/7) with a scale of 290”/mm. It held 8x10 inch glass plates covering 20…

Tags:

DSCN0160.JPG
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…

Tags:

eclipsestation1918.jpg
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…

Tags:

30inch1915.jpg
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…

Tags:

photocell.jpg
Lantern slide of a photoelectric cell made by Jacob Kunz. Part of the Observatory's lantern slide collection, marked "PE 5."

Tags:

Output Formats

atom, dcmes-xml, json, omeka-json, omeka-xml, rss2