General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

METAL

Dimensions

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

Length

81.3 cm

Width

21.6 cm

Height

26.7 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Astronomy

Category

Research

Sub-Category

N/A

Manufacturer

AKA

NRC

Country

Canada

State/Province

Ontario

City

Ottawa

Context

Country

Canada

State/Province

Ontario

Period

USED C. 1963+

Canada

DESIGNED & BUILT BY NRC'S RADIO & ELECTRICAL ENGINEERING DIV, OTTAWA, ON. INSTALLED IN NOCINTOGRAPH [INSTRUMENT] MOUNTED ON ROOF OF SPRINGHILL METEOR OBSERVATORY NEAR OTTAWA, ON. C.1963. (REF.1)

Function

TO TURN ON & OFF THE NOCINTOGRAPH [INSTRUMENT DEV'D BY NRC] AT ASTRONOMICAL TWILIGHT, AND TO PROVIDE HALF-HOURLY PULSES TO START EACH CYCLE OF OBSERVATIONS. (REF.1)

Technical

CLOCK IS PART OF NOCINTOGRAPH [NOCTURNAL INTENSITY RECORDER], USED TO RECORD THE INTENSITIES OF THE NIGHT AIRGLOW EMISSIONS IN THE VISIBLEREGION OF THE SPECTRUM. IT'S PURPOSE WAS TO TURN ON THE EQ. JUST AFTER THE END OF ASTRONOMICAL TWILIGHT OR MOONSET, WHICHEVER WAS LATER, AND TO SHUT OFF THE EQ. JUST BEFORE THE BEGINNING OF ASTRONOMICAL TWILIGHT OR MOONRISE, WHICHEVER IS EARLIER. IT ALSO PROVIDED PULSES AT HALF-HOUR INTERVALS TO START EACH CYCLE OF OBSERVATIONS, ONCE THE NOCINTOGRAPH WAS OPERATING. (REF.1)

Area Notes

Unknown

Details

Markings

N/A

Missing

From CA of 07/27/1995 by Tony Missio: Undetermined

Finish

GREY METAL BOX, LATCHES ON FRONT, INSIDE IS A RECORDING DRUM WHICH MOVES ALONG A THREADED SHAFT AS SHAFT TURNS, SMALL ELECTRIC MOTOR DRIVES SHAFT, 3 SOCKETS AT REAR

Decoration

N/A