Renseignements généraux

Nº de série

S/O

Nº de partie

1

Nombre total de parties

1

Ou

S/O

Brevets

S/O

Description générale

METAL

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

81,3 cm

Largeur

21,6 cm

Hauteur

26,7 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Astronomie

Catégorie

Recherche

Sous-catégorie

S/O

Fabricant

Ou

NRC

Pays

Canada

État/province

Ontario

Ville

Ottawa

Contexte

Pays

Canada

État/province

Ontario

Période

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)

Fonction

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)

Technique

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)

Notes sur la région

Inconnu

Détails

Marques

S/O

Manque

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

Fini

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

Décoration

S/O