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Title
A name given to the resource
Keuffel & Esser Marine sextant
Rights
Information about rights held in and over the resource
Copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Sextants and accessories
Description
An account of the resource
The "old astronomy" was dominated by the precise measurement of the positions of the stars and the determination of time. At Illinois, astronomy was first taught as part of the Civil Engineering department helping to develop the engineers' surveying skills. Specialized telescopes and procedures were developed for this purpose. As the "new astronomy" of astrophysics began to develop, positional astronomy was taught less and less. The one exception was the need for navigation by military ships and airplanes. In 1918 a Navigation course was offered for air service men. The course continued after WWI and was advertised as a course of interest to engineers and those thinking of working on merchant ships. This collection consists of sextants and other accessories such as artificial horizons that were used in positional astronomy, surveying, and navigation.
Contributor
An entity responsible for making contributions to the resource
Department of Astronomy
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Marine sextant
Subject
The topic of the resource
Astronomy
Navigation
Surveying
Measuring instruments
Description
An account of the resource
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. Clamp and transit screw to vernier. Mounting reading lens (missing), 1 plain sighting tube, 1 inverting telescope, 1 star telescope, 2 neutral glasses, 7 neutral glasses to sextant, polished mahogany case with lock. Box has hinged lid, two latches, lock, inside maker label and “obs 143” mark, paper label “2” on exterior.
Creator
An entity primarily responsible for making the resource
Keuffel & Esser, New York
Source
A related resource from which the described resource is derived
Keuffel & Esser Co. (1913). Catalogue and price list of Keuffel& Esser co, manufacturers and importers of drawing materials and surveying instruments. Keuffel & Esser Co: New York.
Publisher
An entity responsible for making the resource available
Astronomy Department, University of Illinois, Urbana, Illinois
Date
A point or period of time associated with an event in the lifecycle of the resource
About 1915
Contributor
An entity responsible for making contributions to the resource
Michael Svec
Rights
Information about rights held in and over the resource
Copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
Language
A language of the resource
English
Type
The nature or genre of the resource
physical object
Identifier
An unambiguous reference to the resource within a given context
University of Illinois Observatory Collection A234
University ID 016681, obs143
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
University of Illinois Observatory, Urbana, Illinois
sextant
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Title
A name given to the resource
Heliostat foucault
Rights
Information about rights held in and over the resource
Copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Instrument collection
Description
An account of the resource
For most of human history, our eyes served as the recording device for our observations of the night sky. Later, developments in photography began to change how we viewed and documented astronomical observations. The instrument collection consists of auxiliary instruments used on the 12-inch equatorial refractor. Some of the instruments such as the filar micrometer and spectroscope were designed for use with human eye as the detector, others such as the plate camera used film.
Contributor
An entity responsible for making contributions to the resource
Department of Astronomy
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Heliostat foucault
Subject
The topic of the resource
Astronomy
Optical instrument
Description
An account of the resource
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 fixed telescope, a flat mirror is rotated by a lever arm connected to motor turning once every 24 hours. James Biddle of Philadelphia imported these instruments.
Creator
An entity primarily responsible for making the resource
Societe Genevoise D’instruments de physcique (SIP), Geneva, Switzerland
Source
A related resource from which the described resource is derived
Prix-courant 1900 / Société Genevoise pour la construction d'instruments de physique et de mécanique, Chemin Gourgas, Genève (1900) Genève : W. Kündig & Fils. Page 86.
Publisher
An entity responsible for making the resource available
Astronomy Department, University of Illinois, Urbana, Illinois
Date
A point or period of time associated with an event in the lifecycle of the resource
1910
Contributor
An entity responsible for making contributions to the resource
Michael Svec
Rights
Information about rights held in and over the resource
Copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
Language
A language of the resource
English
Type
The nature or genre of the resource
physical object
Identifier
An unambiguous reference to the resource within a given context
University of Illinois Observatory Collection A209
University ID 055343
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
University of Illinois Observatory, Urbana, Illinois
heliostat
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Title
A name given to the resource
P & R Wittstock transit
Rights
Information about rights held in and over the resource
Copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
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The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Telescopes
Description
An account of the resource
Telescopes are the eyes on the universe and an observatory typically has a variety of telescopes, some permanently mounted other portable. Telescopes can be designed for specific purposes such as measuring the position of a star or for taking photographs. Telescopes are also designed for different audiences including students and the researchers. The Observatory contains a variety of telescopes gathered over the years serving a variety of uses.
Contributor
An entity responsible for making contributions to the resource
Department of Astronomy
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Engineer transit telescope
Subject
The topic of the resource
Astronomy
Navigation
Surveying
Measuring instruments
Description
An account of the resource
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 striding level. There is a later aluminum bracket attached to the transit. It also has a 1-inch objective and 20-inch focal length.
Creator
An entity primarily responsible for making the resource
P & R Wittstock, Berlin, Germany
Publisher
An entity responsible for making the resource available
Astronomy Department, University of Illinois, Urbana, Illinois
Date
A point or period of time associated with an event in the lifecycle of the resource
1905-1906
Contributor
An entity responsible for making contributions to the resource
Michael Svec
Rights
Information about rights held in and over the resource
Copyright by Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
Language
A language of the resource
English
Type
The nature or genre of the resource
physical object
Identifier
An unambiguous reference to the resource within a given context
University of Illinois Observatory Collection A114, A115
University ID 016649 obs10, 016650, obs9
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
University of Illinois Observatory, Urbana, Illinois
engineer's transit
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Title
A name given to the resource
Warner & Swasey drum chronograph
Rights
Information about rights held in and over the resource
Copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Time
Description
An account of the resource
One of the oldest responsibilities of an astronomer was the measurement of time. Before telegraph and radios, each observatory had special equipment and clocks for the precise determination of local solar and local sidereal time. These clocks were much more precise than the typical pendulum clocks found in the home. This collection contains the clocks, time recording devices and weather instruments necessary for the accurate measurement of the local time.
Contributor
An entity responsible for making contributions to the resource
Department of Astronomy
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Drum chronograph
Subject
The topic of the resource
Astronomy
Clocks
Measuring instrument
Time recording device
Furniture
Description
An account of the resource
Metal, wood, glass
The chronograph, made by Warner and Swasey, is permanently mounted in the clock room. Includes wooden box (9 ¼ x 6 ¼ x 50 ¾ inches) connected to counter-weights and pulleys attached to the ceiling. It consists of a brass cylinder 7-inches in diameter and 14-inches long onto which paper is attached. The driving mechanism is housed to the immediate left of the cylinder. The driving mechanism consists of a spinning governor for regulation and weights to provide the power. A pen is carried on the armature of an electromagnet through which, when current flows, makes a tick mark on the rotating paper. It is possible to measure the time and duration of an event to a hundredth of a second accuracy (depending on how accurately the clock is set).
The weight driven gears still work although the system needs cleaning. The armature and drum still work. The paint on the chronograph is cracking.
The chronograph is connected to the Observatory’s clocks, which provide tick marks every second, and to a key, usually by a transit telescope. An astronomer hits the key when an event occurs and a tick mark is left on the paper with the second tick marks. By recording events this way astronomers can concentrate on the telescope observations and can read the times from the paper at a more convenient time. The chronograph continued to be use in association with the clocks through the 1960s for timing lunar occultation’s and transits.
Creator
An entity primarily responsible for making the resource
Warner & Swasey Company
Source
A related resource from which the described resource is derived
Todd, David P. (1897) A New Astronomy. American Book Company: New York. Page 213.
Publisher
An entity responsible for making the resource available
Astronomy Department, University of Illinois, Urbana, Illinois
Date
A point or period of time associated with an event in the lifecycle of the resource
1896
Contributor
An entity responsible for making contributions to the resource
Michael Svec
Rights
Information about rights held in and over the resource
Copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
Language
A language of the resource
English
Type
The nature or genre of the resource
physical object
Identifier
An unambiguous reference to the resource within a given context
University of Illinois Observatory Collection A116
University ID 016668, obs36
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
University of Illinois Observatory, Urbana, Illinois
chronograph
-
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The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Green Mercury Stick barometer
Rights
Information about rights held in and over the resource
Copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
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Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Time
Description
An account of the resource
One of the oldest responsibilities of an astronomer was the measurement of time. Before telegraph and radios, each observatory had special equipment and clocks for the precise determination of local solar and local sidereal time. These clocks were much more precise than the typical pendulum clocks found in the home. This collection contains the clocks, time recording devices and weather instruments necessary for the accurate measurement of the local time.
Contributor
An entity responsible for making contributions to the resource
Department of Astronomy
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Mercury stick barometer
Subject
The topic of the resource
Astronomy
Weather instrument
Barometer
Measuring instrument
Description
An account of the resource
Wood, metal, glass, mercury
Housed in wooden box with glass sides, hinged wood/glass door, case is 9 ¼ x 6 ¼ x 50 ¾ inches. Originally kept in the entrance hall on the west wall, just north of the door to the transit rooms. Glass on front door broken.
Consists of mercury in a glass tube encased by chrome and brass tube. Provided with two scales read with a vernier to 0.002 of an inch and 0.05 mm. Range is 66 mm to 83 mm and 26 in to 32.5 in. Vernier moved by turning an attached wheel. Thermometer mounted on barometer measures temperature of the mercury in Centrigrade. Barometer is 45 inches long. Suspended to Mahogany board by a hanger at the top with steadying screws at the bottom cistern. White opal glass plates attached to board for reading the instruments. Inscribed on cistern with “Henry J. Green, New York,” the number 3603 on thermometer and number 3138 on the mercury scale.
The barometric pressure and the temperature were two important factors in determining the atmosphere’s index of refraction. The index of refraction was necessary for transit observations.
Creator
An entity primarily responsible for making the resource
Henry J. Green & Company, New York
Publisher
An entity responsible for making the resource available
Astronomy Department, University of Illinois, Urbana, Illinois
Date
A point or period of time associated with an event in the lifecycle of the resource
1896
Contributor
An entity responsible for making contributions to the resource
Michael Svec
Rights
Information about rights held in and over the resource
Copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
Language
A language of the resource
English
Type
The nature or genre of the resource
physical object
Identifier
An unambiguous reference to the resource within a given context
University of Illinois Observatory Collection A129
University ID 016673, obs79
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
University of Illinois Observatory, Urbana, Illinois
barometer
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The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Haines small Sidereal Clock
Creator
An entity primarily responsible for making the resource
Haines
Format
The file format, physical medium, or dimensions of the resource
Image
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Large Haines Sidereal clock, 8-inch dial
Contributor
An entity responsible for making contributions to the resource
Michael Svec
Format
The file format, physical medium, or dimensions of the resource
Image
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Haines Sidereal clock, 8-inch dial
Format
The file format, physical medium, or dimensions of the resource
Image
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3e81568dc8fa8340856bbdb9002e17f2
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Haines Sidereal clock, 8-inch dial, interior.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Time
Description
An account of the resource
One of the oldest responsibilities of an astronomer was the measurement of time. Before telegraph and radios, each observatory had special equipment and clocks for the precise determination of local solar and local sidereal time. These clocks were much more precise than the typical pendulum clocks found in the home. This collection contains the clocks, time recording devices and weather instruments necessary for the accurate measurement of the local time.
Contributor
An entity responsible for making contributions to the resource
Department of Astronomy
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Cabin sidereal clock
Subject
The topic of the resource
Astronomy
Clocks
Description
An account of the resource
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 1966.
A 1953 ad shows the electric sidereal clock with a rating of less than one minute slow in 16 years. Cast aluminum case with bronze bezel for $40.
Creator
An entity primarily responsible for making the resource
Haines Scientific Instruments, Englewood, New Jersey
Publisher
An entity responsible for making the resource available
Astronomy Department, University of Illinois, Urbana, Illinois
Date
A point or period of time associated with an event in the lifecycle of the resource
about 1966
Contributor
An entity responsible for making contributions to the resource
Michael Svec
Rights
Information about rights held in and over the resource
copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
Language
A language of the resource
English
Type
The nature or genre of the resource
physical object
Identifier
An unambiguous reference to the resource within a given context
University of Illinois Observatory Collection A225.1, A225.2
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
University of Illinois Observatory, Urbana, Illinois
clock
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The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Keuffel & Esser catalog for reflecting horizon
Description
An account of the resource
Keuffel & Esser Co. (1913). Catalogue and price list of Keuffel& Esser co, manufacturers and importers of drawing materials and surveying instruments. Keuffel & Esser Co: New York.
Date
A point or period of time associated with an event in the lifecycle of the resource
1913
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Sextants and accessories
Description
An account of the resource
The "old astronomy" was dominated by the precise measurement of the positions of the stars and the determination of time. At Illinois, astronomy was first taught as part of the Civil Engineering department helping to develop the engineers' surveying skills. Specialized telescopes and procedures were developed for this purpose. As the "new astronomy" of astrophysics began to develop, positional astronomy was taught less and less. The one exception was the need for navigation by military ships and airplanes. In 1918 a Navigation course was offered for air service men. The course continued after WWI and was advertised as a course of interest to engineers and those thinking of working on merchant ships. This collection consists of sextants and other accessories such as artificial horizons that were used in positional astronomy, surveying, and navigation.
Contributor
An entity responsible for making contributions to the resource
Department of Astronomy
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Reflection horizon
Subject
The topic of the resource
Astronomy
Navigation
Surveying
Measuring instruments
Description
An account of the resource
Black glass ground plane surface, 3 3/8 diameter, 3 leveling screws, fine graduated adjustable spirit level, and mahogany case.
In the 1913 Keuffel & Esser catalog (page 413) the reflecting horizon cost $16. The reflecting horizon is an alternative to the mercury artificial horizon and is used with a sextant when the horizon is not visible.
Creator
An entity primarily responsible for making the resource
Keuffel & Esser Company, New York
Source
A related resource from which the described resource is derived
Keuffel & Esser Co. (1913). Catalogue and price list of Keuffel& Esser co, manufacturers and importers of drawing materials and surveying instruments. Keuffel & Esser Co: New York.
Publisher
An entity responsible for making the resource available
Astronomy Department, University of Illinois, Urbana, Illinois
Date
A point or period of time associated with an event in the lifecycle of the resource
about 1915
Contributor
An entity responsible for making contributions to the resource
Michael Svec
Rights
Information about rights held in and over the resource
copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
Language
A language of the resource
English
Type
The nature or genre of the resource
physical object
Identifier
An unambiguous reference to the resource within a given context
University of Illinois Observatory Collection A226.1, 226.2
University ID 016680 obs142, 016682 obs144
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
University of Illinois Observatory, Urbana, Illinois
artificial horizon
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The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Telescopes
Description
An account of the resource
Telescopes are the eyes on the universe and an observatory typically has a variety of telescopes, some permanently mounted other portable. Telescopes can be designed for specific purposes such as measuring the position of a star or for taking photographs. Telescopes are also designed for different audiences including students and the researchers. The Observatory contains a variety of telescopes gathered over the years serving a variety of uses.
Contributor
An entity responsible for making contributions to the resource
Department of Astronomy
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Collimator lens and meridian mark
Subject
The topic of the resource
Astronomy
Optical instrument
Description
An account of the resource
Metal, glass
Measures 8 ¼ x 6 x 11 ½ inches, lens is 1.7” in diameter.
Director G.W. Myers articulated the need for a Meridian or mire Mark in a March 6, 1897 letter to university President Draper. “Mire mark and Collimator for 3-inch Combined and Transit and Zenith Telescope.” The collimator was mounted in the north window of the east-central transit room on a brick pier, cased in wood above the level of the floor, with a wooden box as a cover. The wood reduces the impact of the brick’s radiant heating. The meridian mark was located on a distant pier north of the building at the focal point of the collimator lens. The Meridian mark was removed with the construction of Smith Hall (1917), the pier for the collimator was removed during the 1956 expansion of the Observatory. At the Elgin Watch Company Observatory (Illinois), there was also a 3-inch Warner & Swasey transit with a meridian mark 100 feet to the north consisting of a metal plate with a hole three thousandth of an inch in diameter serving as an artificial star.
Creator
An entity primarily responsible for making the resource
Warner & Swasey Company
Source
A related resource from which the described resource is derived
Payne, W.W. (1927 January) Elgin Observatory. Popular Astronomy. 35 (1) 1-9.
Publisher
An entity responsible for making the resource available
Astronomy Department, University of Illinois, Urbana, Illinois
Date
A point or period of time associated with an event in the lifecycle of the resource
1897
Contributor
An entity responsible for making contributions to the resource
Michael Svec
Rights
Information about rights held in and over the resource
Copyright by Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
Language
A language of the resource
English
Type
The nature or genre of the resource
physical object
Identifier
An unambiguous reference to the resource within a given context
University of Illinois Observatory Collection A136
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
University of Illinois Observatory, Urbana, Illinois
collimator
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The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
IBM master clock
Rights
Information about rights held in and over the resource
Copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
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Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Time
Description
An account of the resource
One of the oldest responsibilities of an astronomer was the measurement of time. Before telegraph and radios, each observatory had special equipment and clocks for the precise determination of local solar and local sidereal time. These clocks were much more precise than the typical pendulum clocks found in the home. This collection contains the clocks, time recording devices and weather instruments necessary for the accurate measurement of the local time.
Contributor
An entity responsible for making contributions to the resource
Department of Astronomy
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Master clocks
Subject
The topic of the resource
Astronomy
Clocks
Measuring instrument
Description
An account of the resource
Wood, glass, metal
They are model 25 IBM Master clocks. There are two 60 beat with a Graham dead-beat escapement with micrometer adjustment. Magnet wound, spring drive, self-regulating movement, 63 1/6” x 19 ¼” x 7 5/8”, plain glass door, 12” Arabic dial, white with black numbers, separate hours and smaller seconds circle. There is a one second switch as well as a 59 second switch. Pendulum is a mercurial compensating pendulum, 45 5/16 inches long and approximately 11.5 pounds, accurate to 10 seconds over a 30-day period. The standard time clock has the original mercurial pendulum with two cylinders. The sidereal clock pendulum is a replacement Invar pendulum with one cylinder. Clocks are automatically wound with reserve power for approximately 12 hours. Clocks are housed in a walnut wood case with a glass door and two locks.
A=central standard time (south side of pier), B=local sidereal time (east side of pier). Clock serial numbers are 462905 and 462904.
Included in the purchase order was the new switching wiring and metal storage cabinet and control panel outside the clock room. Paper instructions included.
These clocks replaced the original 1896 Clemens Riefler clocks both of which are now part of the Alder Planetarium collect.
Creator
An entity primarily responsible for making the resource
IBM
Publisher
An entity responsible for making the resource available
Astronomy Department, University of Illinois, Urbana, Illinois
Date
A point or period of time associated with an event in the lifecycle of the resource
1954
Contributor
An entity responsible for making contributions to the resource
Michael Svec
Rights
Information about rights held in and over the resource
Copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
Language
A language of the resource
English
Type
The nature or genre of the resource
physical object
Identifier
An unambiguous reference to the resource within a given context
University of Illinois Observatory Collection A211.1, 211.2
University ID 196631A, 196631B
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
University of Illinois Observatory, Urbana, Illinois
clock
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Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Physical apparatus
Description
An account of the resource
In addition to equipment attached to the telescope, astronomers, especially in the "new astronomy," often had laboratory equipment that could be found in a physics laboratory. Much of this equipment at Illinois was related to the development of photoelectric photometry. The photometer turned the star's light into electric current and much of this equipment was need to measure the electrical output of the photometer.
Contributor
An entity responsible for making contributions to the resource
Department of Astronomy
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Reflection galvanometer
Subject
The topic of the resource
Electrical apparatus
Measuring instrument
Description
An account of the resource
Model no. 89, no. 18. Box is 8 ¼ x 8 ½ x 12 inches and screwed closed. Unknown date but estimated around 1908. Used with the selenium cell photometer to measure current and with the photoelectric cell photometer. Visible in pictures of transit room. An unpublished photograph in the Jakob Kunz papers, University Archives, from the 1918 eclipse expedition shows this galvanometer sitting on a shelf in the background. A published picture from 1910 and another unpublished photo from 1912 show the same galvanometer.
Creator
An entity primarily responsible for making the resource
Weston Electrical Instruments Company, New, New Jersey
Publisher
An entity responsible for making the resource available
Astronomy Department, University of Illinois, Urbana, Illinois
Date
A point or period of time associated with an event in the lifecycle of the resource
circa 1908
Contributor
An entity responsible for making contributions to the resource
Michael Svec
Rights
Information about rights held in and over the resource
Copyright Michael Svec
Format
The file format, physical medium, or dimensions of the resource
image/jpg
Language
A language of the resource
English
Type
The nature or genre of the resource
physical object
Identifier
An unambiguous reference to the resource within a given context
University of Illinois Observatory Collection A193
obs52
Coverage
The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant
University of Illinois Observatory, Urbana, Illinois
Relation
A related resource
Harvard Collection: http://waywiser.fas.harvard.edu/objects/2183/reflecting-galvanometer-with-moving-coil
galvanometer