Telescope, transit

Use this image

Can I reuse this image without permission? Yes

Object images on the Ingenium Collection’s portal have the following Creative Commons license:

Copyright Ingenium / CC BY-NC-ND (Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

ATTRIBUTE THIS IMAGE

Ingenium, 1970.0218.001
Permalink:

Ingenium is releasing this image under the Creative Commons licensing framework, and encourages downloading and reuse for non-commercial purposes. Please acknowledge Ingenium and cite the artifact number.

DOWNLOAD IMAGE

PURCHASE THIS IMAGE

This image is free for non-commercial use.

For commercial use, please consult our Reproduction Fees and contact us to purchase the image.

OBJECT TYPE
Refracting
DATE
1900–1921
ARTIFACT NUMBER
1970.0218.001
MANUFACTURER
Cooke, T. & Sons Ltd.
MODEL
Unknown
LOCATION
Unknown

More Information


General Information

Serial #
N/A
Part Number
1
Total Parts
7
AKA
N/A
Patents
N/A
General Description
Metal (including brass), glass

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length
109.0 cm
Width
61.0 cm
Height
25.5 cm
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

Group
Astronomy
Category
Observation equipment
Sub-Category
N/A

Manufacturer

AKA
Cooke
Country
Unknown
State/Province
Unknown
City
Unknown

Context

Country
Canada
State/Province
Unknown
Period
ca. 1900-1940
Canada
One of the primary instruments used to determine time. It is not know if this particular instrument was solely used in Ottawa or as a primary survey transit for first order triangulation mapping projects. If the latter, it would have been used to determine the longitude of the primary reference points. If/when used in Ottawa, it would have been used to determine the time of Ottawa used as the primary or secondary instrument to define standard time for Canada and to determine the slowing or speeding up of the Earth. This is a typical astronomical transit telescope with design features having appeared in Troughton & Simms transits ca. 1850.
Function
Used to measure the passage of stars across the meridian in order to precisely determine the local time.
Technical
The transit telescope is a moderate sized instrument made by the best manufactures of the day. The transit telescope first appeared ca. 1705 in Denmark having been created by Ole Romer. The instrument is different from other astronomical telescopes in that its axis is constrained to move in the N-S plane of the sky through the zenith. They were designed to be reversed on the axis in order to observe and correct errors in the alignment of the axis.
Area Notes
Unknown

Details

Markings
.3 Dial marked off from 0-90. .4 Engraved 'T. COOKE & SONS LTD./ LONDON & YORK' & '2'; Dial on side marked off from 0-90 and circle on face marked off from 0-40; An arrow and 'OUT' can be seen on inner pt. .8 Label on crate reads: "ASTRONOMICAL INSTRUMENTS/ WITH CARE'
Missing
From CA of 01/18/2002 by Matthew Bruce: No - appears complete
Finish
.1 Brass-coloured & painted black, silver-coloured eyepiece/ .2 Brass colour/ .3 Brass-coloured, some bright, some tarnished-looking areas, some black & some dull red pts/ .4 Brass colour with black pts/ .5 Brass-colour, appears black inside/ .6 Painted black, brass colour on ends/ .7 Painted black, brass-coloured pts./.8 Painted dark brown.
Decoration
N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Cooke, T. & Sons Ltd., Telescope, transit, between 1900–1921, Artifact no. 1970.0218, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1970.0218.001/

FEEDBACK

Submit a question or comment about this artifact.

More Like This


...
Telescope, tr…

1987.0842.001

Object

...
Telescope, tr…

1970.0217.001

Object

No image available.
Telescope, tr…

1990.0282.002

Object

...
Eyepiece

1970.0218.004

Object

...
Telescope

1986.0789.001

Object

...
Lens, telesco…

1970.0217.012

Object

...
Eyepiece

2018.0111.002

Object

...
Eyepiece

2018.0111.003

Object

...
Mirror

2018.0111.005

Object

...
Screwdriver

2018.0111.006

Object

...
Filter

2018.0111.004

Object

...
Case, sextant

2018.0111.008

Object

...
Telescope, tr…

1985.0565.001

Object

...
Telescope, tr…

1990.0282.001

Object

...
Telescope

1966.0402.001

Object

...
Telescope, tr…

1976.0300.001

Object

...
Lens, telesco…

1970.0217.007

Object

...
Lens, telesco…

1970.0217.011

Object

...
Sextant

2018.0111.001

Object

...
Specimen, geo…

2018.0111.007

Object

...
Lens, telesco…

1970.0217.009

Object

No image available.
Lens, telesco…

1970.0217.010

Object

No image available.
Lens, telesco…

1970.0217.008

Object

...
Telescope

1984.1177.001

Object

...
Back, camera

1970.1517.002

Object

...
Telescope

1974.0720.001

Object

...
Telescope

1974.0488.001

Object

...
Transit

1986.0192.001

Object

...
Level

1970.0217.002

Object

...
Telescope, ze…

1972.0376.001

Object

...
Weight, teles…

1972.0376.002

Object

...
Chronograph

1966.0612.001

Object

...
Clock

1966.0545.001

Object

...
Level

1990.0282.003

Object

...
Level, stridi…

1990.0282.004

Object

No image available.
Base

1970.0217.013

Object

...
Weight, teles…

1972.0376.003

Object

...
Lens, telesco…

1974.0488.012

Object

...
Dial, clock

1966.0403.008

Object

...
Telescope

1966.0400.001

Object

...
Hood, lens

1970.0218.005

Object

...
Telescope

1994.0211.001

Object

...
Telescope

2010.1200.001

Object

...
Clock

1966.0528.001

Object

...
Cover, lens

1970.1517.003

Object

...
Rod

1974.0488.003

Object

...
Level

1970.0217.003

Object

...
Box, storage

2010.1200.008

Object

...
Lens, telesco…

2010.1200.011

Object

...
Telescope par…

2010.1200.005

Object

...
Telescope par…

2010.1200.006

Object

No image available.
Crate

1972.0376.004

Object

...
Camera body

1970.1517.001

Object

...
Tube, optical

2010.1200.002

Object

...
Level, stridi…

1970.0215.001

Object

...
Mirror

2010.1200.009

Object

...
Mount

2010.1200.007

Object

...
Lens, telesco…

2010.1200.012

Object

...
Transit

1966.0527.001

Object

...
Ring

2010.1200.013

Object

...
Tripod

2010.1200.003

Object

...
Support

1966.0403.006

Object

...
Grating, spec…

1995.0422.001

Object

...
Weight, teles…

2010.1200.004

Object

...
Stand

1966.0403.007

Object

...
Level

1970.0217.006

Object

...
Telescope, tr…

1983.0250.001

Object

...
Theodolite

1990.0281.001

Object

...
Holder, lens

1974.0488.004

Object

...
Holder, lens

1974.0488.005

Object

...
Box

2010.1200.010

Object

...
Cover, lens

1972.0376.005

Object

...
Sextant

1992.1575.001

Object

...
Lens, telesco…

1966.0403.002

Object

...
Shade, lamp

1974.0488.020

Object

...
Support

1974.0488.008

Object

...
Gear

1974.0488.009

Object

...
Theodolite

1968.0768.001

Object

...
Micrometer

1970.1518.001

Object

...
Polariser

1999.0355.001

Object

...
Grating, spec…

1996.0245.001

Object

...
Lens, telesco…

1974.0488.013

Object

...
Pulley

1974.0488.010

Object

...
Lens, telesco…

1966.0403.003

Object

No image available.
Lens, telesco…

1966.0403.004

Object

...
Lens, telesco…

1966.0403.005

Object

...
Case, octant

1983.0362.002

Object

...
Case, lens

1974.0488.002

Object

...
Eyepiece

1974.0488.014

Object

...
Eyepiece

1974.0488.015

Object

...
Eyepiece

1974.0488.016

Object

...
Eyepiece

1974.0488.017

Object

No image available.
Compass, astro

2008.0203.001

Object

No image available.
Magnifier

2008.0210.001

Object

No image available.
Telescope base

1970.0218.007

Object

...
Octant

1983.0362.001

Object

...
Collar

1974.0488.006

Object

...
Filter, teles…

1966.0228.011

Object

...
Telescope

1966.0228.001

Object

...
Lens, telesco…

1984.0227.001

Object