File:Stonyhurst Disk 1893 Aug 9.gif
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Stonyhurst_Disk_1893_Aug_9.gif (435 × 402 pixels, file size: 25 KB, MIME type: image/gif)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 01:07, 13 October 2012 | 435 × 402 (25 KB) | Vladimir Ivanov | {{Information |Description=Image of the Sun (9 Aug 1893). Determination of sunspots heliographic coordinates by Stonyhurst disk. |Source=Cortie, A. L. The Stonyhurst Disks for Measuring the Position of Sun-Spots (англ.) // Popular Astronomy. — 19... |
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