General Information

Serial #

N/A

Part Number

1

Total Parts

10

AKA

N/A

Patents

N/A

General Description

METAL WITH GLASS & SYNTHETIC

Dimensions

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

Length

137.0 cm

Width

134.0 cm

Height

35.0 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

TINSLEY

Country

United States of America

State/Province

California

City

Berkeley

Context

Country

Canada

State/Province

Ontario

Period

C. 1958-1959 TO C. 1973

Canada

TELESCOPE USED AT DOMINION OBSERVATORY, CANADA'S PREDOMINANT ASTRONOMICAL OBSERVATORY WHICH OPERATED FROM 1905 TO 1970. IT WAS ONE OF TWO PURCHASED C. 1958-1959 (OTHER WENT C. 1968 TO PHYSICS DEPT. OF U. OF WATERLOO, WHERE IT IS STILL IN USE) & WAS USED FOR PUBLIC VIEWING.

Function

INSTRUMENT USED TO VIEW CELESTIAL OBJECTS. THIS TELESCOPE WAS USED BY DOMINION OBSERVATORY TO GIVE DEMONSTRATIONS TO GENERAL PUBLIC.

Technical

EXAMPLE OF 12 INCH REFLECTING TELESCOPE WITH PARABOLIC F/15 PRIMARY MIRROR & HYPERBOLIC SECONDARY, OF POOR QUALITY, ESPECIALLY SECONDARY (REF. 1). TINSLEY WAS ONE OF LARGEST MFRS. OF SMALL TO MID-SIZED PROFESSIONAL (OR LARGE AMATEUR) TELESCOPES FROM AROUND 1939 INTO 1970S.

Area Notes

Unknown

Details

Markings

PLATE 'T/ L [BOTH LETTERS ENCIRCLED]/ TINSLEY/ LABORATORIES, INC./ Berkeley, California'/ LARGER ENCIRCLED 'T/ L'/ LARGE '2' & ELSEWHERE A SMALLER '2'/ HANDWRITTEN WITH ARROW IS 'TO CLAMP'/ NO OTHER MKGS VISIBLE AT TIME OF CATALOGUING'

Missing

UNKNOWN

Finish

PAINTED SMOOTH LIGHT GREY & TEXTURED DARKER GREY FINISH WITH BLACK & SILVER-COLOURED PTS

Decoration

N/A