File:Muhammad Qunawi, timekeeping by the stars.jpg
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Summary
| Description |
English: An extract from a 500-page plus table of timekeeping by the stars by Muhammad al-Qunawi (Muhammad ibn al-Katib Sinan).
Columns represent each degree of right ascensions of culminating stars, from 134° to 141° in this excerpt. Rows represent each degree of solar longitude, within Aquarius in this excerpt. Each cell represents the time as a function of the row and column. See en:Muhammad al-Qunawi#On timekeeping by the stars or King 1977, pp. 248, 260 for more details |
| Date | 16th century |
| Source |
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| Author | Original work by Muhammad al-Qunawi (died 1524) |
Licensing
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:33, 18 July 2020 | | 434 × 683 (104 KB) | HaEr48 | Uploaded a work by Original work by Muhammad al-Qunawi (died 1524) from * {{cite conference | last = King | first = David A. |title = Astronomical Timekeeping in Ottoman Turkey | year = 1977 | url=https://www.academia.edu/34693214/ | conference = International Symposium On the Observatories in Islam | editor = M. Dizer | pages = 244–272}} with UploadWizard |
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