{ "viewingDirection": "left-to-right", "metadata": [ { "label": "Origin Place", "value": "Cambridge" }, { "label": "Physical Location", "value": "Cavendish Laboratory" }, { "label": "Extent", "value": "Digitised image: tiff: 26.7 MB: 600 dpi. 5974 x 4687 pixels. jpg: 300 dpi 6.99 MB" }, { "label": "Funding", "value": "" }, { "label": "Abstract", "value": "
Photograph of the moving element of the 4C interferometer at Lord's Bridge. This large interferometer used the principles of aperture synthesis to create a high sensitivity map of the northern sky at 178 MHz. The 4C catalogue became the standard source catalogue at that frequency, eventually containing about 5,000 radio sources of small angular diameter with flux densities greater than 2 Jy.<\/p>" }, { "label": "Date of Creation", "value": "c.1957-8" }, { "label": "Title", "value": "Moving element of the 4C interferometer at the Lord's Bridge radio observatory" }, { "label": "Author(s) of the Record", "value": "TEI created from spreadsheet." }, { "label": "Material", "value": "
Glass <\/p>" }, { "label": "Classmark", "value": "P1734" }, { "label": "Note(s)", "value": "Associated images: P1731, P1747" }, { "label": "Subject(s)", "value": "Radio astronomy; 4C antenna; Moving element" }, { "label": "Format", "value": "Photograph" } ], "@type": "sc:Manifest", "attribution": "Provided by Cambridge University Library. Copyright: Cavendish Laboratory, University of Cambridge Images made available for download are licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License (CC BY-NC 3.0) This metadata is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.", "structures": [{ "canvases": ["https://cudl.lib.cam.ac.uk/iiif/PH-CAVENDISH-P-01734/canvas/1"], "@type": "sc:Range", "@id": "https://cudl.lib.cam.ac.uk/iiif/PH-CAVENDISH-P-01734/range/DOCUMENT", "label": "Moving element of the 4C interferometer at the Lord's Bridge radio observatory" }], "description": "
Photograph of the moving element of the 4C interferometer at Lord's Bridge. This large interferometer used the principles of aperture synthesis to create a high sensitivity map of the northern sky at 178 MHz. The 4C catalogue became the standard source catalogue at that frequency, eventually containing about 5,000 radio sources of small angular diameter with flux densities greater than 2 Jy.<\/p>", "logo": "https://cudl.lib.cam.ac.uk/themeui/theme/images/logo.svg", "@id": "https://cudl.lib.cam.ac.uk/iiif/PH-CAVENDISH-P-01734", "label": "Moving element of the 4C interferometer at the Lord's Bridge radio observatory (P1734)", "sequences": [{ "canvases": [{ "images": [{ "resource": { "@type": "dctypes:Image", "service": { "profile": "http://iiif.io/api/image/2/level1.json", "@id": "https://images.lib.cam.ac.uk/iiif/PH-CAVENDISH-P-01734-000-00001.jp2", "@context": "http://iiif.io/api/image/2/context.json" }, "format": "image/jpg", "width": 5974, "@id": "https://images.lib.cam.ac.uk/iiif/PH-CAVENDISH-P-01734-000-00001.jp2", "height": 4687 }, "@type": "oa:Annotation", "motivation": "sc:painting", "on": "https://cudl.lib.cam.ac.uk/iiif/PH-CAVENDISH-P-01734/canvas/1" }], "@type": "sc:Canvas", "width": 5974, "@id": "https://cudl.lib.cam.ac.uk/iiif/PH-CAVENDISH-P-01734/canvas/1", "label": "1", "height": 4687 }], "@type": "sc:Sequence", "@id": "https://cudl.lib.cam.ac.uk/iiif/PH-CAVENDISH-P-01734/sequence", "label": "Current Page Order" }], "@context": "http://iiif.io/api/presentation/2/context.json", "seeAlso": "https://services.prod.env.cudl.link/v1/metadata/tei/PH-CAVENDISH-P-01734/" }