{
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    "label": "Ursa Minor",
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    "metadata": [
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            "label": "Collection",
            "value": "Caltech Photographs"
        },
        {
            "label": "Series",
            "value": "Rare Book Photographs"
        },
        {
            "label": "Dates",
            "value": [
                "1603"
            ]
        },
        {
            "label": "Extents",
            "value": [
                "1 prints"
            ]
        },
        {
            "label": "Abstract",
            "value": [
                "From Johann Bayer\u2019s \u201cUranometria\u201d (1603), the first \u2018true\u2019 star-atlas. This and other copper-engraved images from the book demonstrate a notable feature of this atlas: the sheer beauty of the plates. Alexander Mair, the artist, clearly found some inspiration in the De Gheyn engravings in the Aratea published by Hugo Grotius in 1600, but most of Bayer\u2019s constellation figures have no known prototype. Significantly, each plate has a carefully engraved grid, so that star positions can be read off to fractions of a degree. These positions were taken, not from Ptolemy\u2019s catalog, but from the catalog of Tycho Brahe, which had circulated in manuscript in the 1590s, yet not printed until 1602. Another important feature of the atlas was the introduction of a new system of stellar nomenclature, Bayer assigning Greek letters to the brighter stars, generally in the order of magnitude."
            ]
        }
    ],
    "attribution": "<p>These digitized collections are accessible for purposes of education and research. Due to the nature of archival collections, archivists at the Caltech Archives and Special Collections are not always able to identify copyright and rights of privacy, publicity, or trademark. We are eager to <a href=\"mailto:archives@caltech.edu\">hear from any rights holders</a>, so that we may obtain accurate information. Upon request, we\u2019ll remove material from public view while we address a rights issue.</p>",
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