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Found 1 dataset matching "Henry Draper Extension Charts Catalog".

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#1 Federal
Henry Draper Extension Charts Catalog
- Organization: National Aeronautics and Space Administration
- Dataset Last Updated: November 05, 2026
The Henry Draper (HD) Catalog (Cannon and Pickering 1918 - 1924, Ann. Astron. Obs. Harvard College 91 - 99) and its first extension, the Henry Draper Extension (HDE) Catalog (Cannon 1934, Ann....
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Search relevance: 379.59 | Views last month: 30 | Catalog Last Checked: November 10, 2026 at 11:56 PM

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