Renseignements généraux

Nº de série

prototype

Nº de partie

1

Nombre total de parties

2

Ou

Iscocon

Brevets

S/O

Description générale

Isocan: glass tube; metal and synthetic parts/ frame: wood frame; metal parts; fabric supporters; synthetic cord?

Dimensions

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

Longueur

13,5 cm

Largeur

11,0 cm

Hauteur

67,0 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Astronomie

Catégorie

Recherche

Sous-catégorie

S/O

Fabricant

Ou

ENGLISH ELECTRIC

Pays

England

État/province

Inconnu

Ville

Inconnu

Contexte

Pays

Canada

État/province

Colombie-Britannique

Période

circa 1965

Canada

The isocon was a experimental device used by Canadian astronomer Gordon A.H. Walker in the1960s to develop more sensitive detectors for astronomical observations. He was in the Dept. of Geophysics and Astronomy at the University of British Columbia and worked closely with staff (especially the tech staff during instrument development) at the Dominion Astrophysical Observatory in Victoria. Dr. Walker and his group at UBC were doing ground breaking research with these devices and they are (or almost) unique in Canada and rare world wide at least for astronomical use. Two or three groups were experimenting with similar technology in the US and UK. One of the major elements of Walker's research was to verify the accuracy of the systems compared to traditional techniques.

Fonction

An image isocon vacuum tube, part of an experimental system used to record images of astronomical phenomena in order to measure star fields and nebulae.

Technique

This device represents a major step from traditional photography based astronomical research and the associated equipment (e.g. microdensitometer (1998.0275), Cuffy Iris photometer) towards CCD based astronomical detectors. Its use enabled a large improvement in detector sensitivity and precision and made possible detection of rapid changes in astronomical spectra. Dr. Walker's system used the isocon as the detector for an astronomical spectrograph, directly digitized the camera output and stored the results on magnetic tape.

Notes sur la région

Inconnu

Détails

Marques

white lettering on tube reads 'ENGLISH ELECTRIC VALVE CO. LTD./ EE [logo]/ MADE IN ENGLAND'/ white lettering on black label reads 'WORLD PATENTS PENDING'/ red lettering on white label reads 'THIS ITEM IS FOR EXPERI-/ MENTAL PURPOSES ONLY/ WITHOUT OBLIGATION AS/ TO FUTURE MANUFACTURE'/ red and black lettering on label on frame reads 'SLINGPAK/ BRITISH PATENT No. 730729/ LEONARD GOULD & CO. LTD./ MAIDSTONE, 83152/3'

Manque

unknown

Fini

Isocon: colourless transparent glass, black and silvered glass; plated and metallic parts/ frame: unfinished wood; metallic parts; off-white fabric; black synthetic cord

Décoration

S/O