General Information

Serial #

420-D

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

STEEL BASE & FRAME/ METAL PARTS/ GLASS OBJECTIVES, PLATES/ SYNTHETIC PARTS

Dimensions

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

Length

38.5 cm

Width

33.5 cm

Height

38.4 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Metrology

Category

Miscellaneous

Sub-Category

N/A

Manufacturer

AKA

GAERTNER

Country

United States of America

State/Province

Illinois

City

Chicago

Context

Country

Canada

State/Province

Unknown

Period

1970S

Canada

INSTRUMENT USED BYRESEARCHERS AT HERZBERG INSTITUTE TO MEASURE PHOTOGRAPHIC PLATES FROM MORP (METEORITE OBSERVATION & RECOVERY PROJECT) WHICH OPERATED ON CANADIAN PRAIRIES IN NORTHERN SASKATCHEWAN & ALBERTA. METEOR ASTRONOMY HAS DEVELOPED INTO STRONGLY CANADIAN BRANCH OF ASTRONOMY, IN WHICH MANY IMPORTANT ADVANCES WERE MADE IN CANADA.

Function

INSTRUMENT USED BY ASTRONOMERS TO MEASURE PHOTOGRAPHIC PLATES OF ASTRONOMICAL PHENOMENA OR EVENTS. THIS ONE WAS USED TO PLOT THE ORBITAL PATHS & POSITIONS OF METEORITES; IT WAS ALSO USED TO MEASURE SPECTRA OF STARS TO DETERMINE CHEMICAL NATURE OR TO DETERMINE MOTION OF SPECTRAL LINES OVER TIME TO IDENTIFY SUCH OBJECTS AS BINARY STARS, RECEDING GALAXIES ETC.

Technical

EXAMPLE OF MID-SIZED MEASURING MACHINE OF C. 1970, PRODUCED BY PRIMARY NORTH AMERICAN SUPPLIER OF THIS EQUIPMENT. DEVELOPED IN BRITAIN & GERMANY IN 3RD QUARTER OF 19TH CENTURY, BY 1970'S SPECIAL COMPUTERS & DIGITIZING TABLES MADE THESE MACHINES OBSOLETE. BY 1980'S, GAERTNER'S MACHINES WERE KEPT FOR OCCASIONAL USE ONLY.

Area Notes

Unknown

Details

Markings

LABELS READING "GAERTNER (WITH LOGO)/ GAERTNER/ SCIENTIFIC/ CORPORATION/ CHICAGO"/ PLATES ON BACK READING "Serial No./ 420-D" & 115 VOLTS 50/60 CYCLES"/ BAR CODE LABEL ON BACK READING "Property of/Propriete du/ NRCC/CNRC/ 084241"/ BLACK INCISED MARKINGS ON SCALES/ PLATE ON MOTOR READS "VOLTS 115 CYCLES 60 WATTS 10/ MODEL 7100-0121 R.P.M. 3600 C.M./ MANUFACTURED BY/ HAGEN MANUFACTURING COMPANY, INC./ BARABOO, WISCONSIN, U.S.A."

Missing

APPEARS COMPLETE

Finish

GREY ENAMEL PAINTED BASE, FRAME, PARTS/ FLAT BLACK PAINTED PARTS/ PLATED, BRUSHED & UNFINISHED METAL/ COLOURLESS TRANSPARENT SYNTHETIC PARTS/ BLACK POWER CORD

Decoration

N/A