File:Parallactic Instrument of Kapteyn.tif
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Captions
Captions
A photo of the parallactic instrument used by Dutch astronomer Jacobus Kapteyn
Summary edit
| Description |
English: A photo of the parallactic instrument built and used by Dutch astronomer Jacobus Kapteyn, used to analyze glass plate photographs of stars seen from the Southern hemisphere (South Africa, photos made by David Gill). Constructed around 1886, used to gather data for the Cape Photographic Durchmusterung. |
| Date | |
| Source | University of Groningen photo collection |
| Author | Dirk Fennema (University of Groningen) |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:45, 14 February 2019 |  | 2,848 × 4,288 (34.95 MB) | MarkMuseum (talk | contribs) | User created page with UploadWizard |
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