artefacts: 290
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| rowid | artifactNumber | ObjectName | GeneralDescription | model | SerialNumber | Manufacturer | ManuCountry | ManuProvince | ManuCity | BeginDate | EndDate | date_qualifier | patent | NumberOfComponents | ArtifactFinish | ContextCanada | ContextFunction | ContextTechnical | group1 | category1 | subcategory1 | group2 | category2 | subcategory2 | group3 | category3 | subcategory3 | material | Length | Width | Height | Thickness | Weight | Diameter | image | thumbnail | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 290 | 1966.0228.002 | Eyepiece | GLASS LENSES & MIRRORS | 80-160X;Questar | Unknown | Japan | 14 | Black Bakelite eyepiece housing with glass lens. White print around the edge. | AN AMERICAN MADE TELESCOPE USED BY THE DOMINION OBSERVATORY IN OTTAWA & LATER BY NMST AS PART OF ITS ASTRONOMICAL EDUCATIONAL PROGRAMME. | INTRODUCED IN 1954 THE QUESTAR WAS A SMALL TABLETOP OR PORTABLE TELESCOPE WITH MAKSUTOV CASSEGRAIN CATADIOPTRIC OPTICS. IT WAS MARKETED FOR USE BY ASTRONOMERS NATURALISTS PHOTOGRAPHERS ETC. IN ADDITION TO THIS 3.5 INCH APERTURE MODEL THERE WAS ALSO THE QUESTAR SEVEN WITH A 7 INCH APERTURE (REF. 2). | Astronomy | Observation equipment | Optical telescopes | metal;glass |