File:Pulkovo 30 inch refracting telescope.jpg
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Summary
| Description |
English: Refracting telescope, 76 cm (30 inch) aperture, installed at Pulkovo Observatory, near St. Petersberg, Russia in 1885. Its scale can be judged by the small human figures in the photo. Built by Repsold and Sons of Germany, it was one of the largest telescopes in the world at the time. Its focal length was 12.8 m (42 ft). During the Siege of Leningrad, 1944, the telescope was destroyed along with the rest of the observatory by German bombardment, but the valuable objective lens, cast by Alvan Clark & Sons, was saved. Caption: "The new 30-inch refractor of the Pulkowa Observatory, constructed by Repsold and Sons, 1884, Hamburg, Germany" |
| Date | |
| Source | Retrieved May 28, 2014 from George Frederick Chambers 1890 A Handbook of Descriptive and Practical Astronomy, Vol 2: Instruments and Practical Astronomy, Clarendon Press, Oxford, plate 1, frontispiece on Google Books |
| Author | Credited to Woodburytype, Oxford University Press |
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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:53, 28 May 2014 | | 1,296 × 1,792 (256 KB) | Chetvorno | User created page with UploadWizard |
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