Renseignements généraux

Nº de série

A536483

Nº de partie

1

Nombre total de parties

2

Ou

S/O

Brevets

S/O

Description générale

Synthetic casing, controls, disk drive casings, electrical cord covering, parts/ Metal casing back, wiring and parts

Dimensions

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

Longueur

44,6 cm

Largeur

44,0 cm

Hauteur

16,0 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Technologie informatique

Catégorie

Dispositifs numériques

Sous-catégorie

S/O

Fabricant

Ou

Acer

Pays

United States of America

État/province

Inconnu

Ville

Inconnu

Contexte

Pays

Canada

État/province

Ontario

Période

1994+

Canada

A piece of equipment used at the David Dunlap Observatory at the University of Toronto, one of Canada's most important astronomical observatories. The David Dunlap Observatory opened in 1935 as the result of a bequest from the wife of David Dunlap. The telescope was a 74 inch (188 cm) reflector built by Grubb Parsons of Newcastle-upon-Tyne in England. The 74 inch was then the largest telescope in Canada (surpassing the 72 inch telescope of the Dominion Astrophysical Observatory in Victoria) and became the second largest in the world after the 100 inch Hooker Telescope of the Mt. Wilson Observatory outside Los Angeles. DDO's reputation grew and following WWII, it began to graduate most of the astronomers produced in Canada with University of Western Ontario far behind. Beginning in the 1960s a number of other astronomy departments were created but UofT/DDO held its place, a position it probably still holds. The DDO had a good technical staff which gave them an advantage and, with most of the 1940s to early 1970s top astronomers coming from UofT, grants from NRC and then ENSERC were almost guaranteed and allowed UofT's top astronomers -- Hogg, van den Berg, Fernie, Bolton, Kamper, Martin, etc. to acquire or build some of the best equipment available in university observatories. For optical observatories, only the DAO had technical staff and budgets that surpassed those of DDO. In 2007, citing increasing light pollution, the University of Toronto announced plans to sell the Observatory property. In June 2008, it was sold to Corsica Development Inc., a subsidiary of Metrus Development Inc. and the Observatory was closed. In 2009 the Observatory buildings and 80% of the site were designated a cultural heritage landscape. Also in 2009 Corsica and the Royal Astronomical Society of Canada, Toronto Centre announced an agreement allowing the RASC to provide public education and outreach programs at the observatory, and to operate the 188 cm telescope.

Fonction

A programmable machine that accepts and processes data, this one used in an astronomical observatory in the operation of a measuring engine.

Technique

A computer made in 1994 and probably used with an astronomical measuring engine, the Perkin-Elmer PDS machine. This was a device for digitally measuring photographs, used to measure both stellar and galactic spectra as well as direct images of the sky taken with the DDOs 74 inch telescope and plates acquired by Sidney Van de Burgh at the 48 inch Mt. Palomar Schmidt telescope. An example of a mid 1990s desktop computer sold by the Taiwanese company Acer. AcerPower was one of the company's product series.

Notes sur la région

Inconnu

Détails

Marques

Raised grey lettering and logo on front reads ‘ACER’/ Grey lettering on front reads ‘AcerPower 486V’/ Labels on front read ‘Lacerta’, ‘4200 000991’ and ‘intel/ inside’/ Label on underside reads ‘ACER/ Model No. PT66W/ Extension: 8689/ AC Rating: -100-120V/ 50-60Hz 5A/ -200-240V/ 50-60Hz 3A/ Mfg. date: 940412/ Assembled in U.S.A.’/ Bar code label on back reads P/N 91-AA006-003/ S/N A536483’/ Grey lettering on disk dive reads ‘SONY’

Manque

Appears complete except for one casing fastener on top.

Fini

Textured buff coloured casing/ Buff and black coloured controls/ Plated and metallic parts/ Black electrical cord

Décoration

S/O