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Purple Mountain Observatory
24. 20 cm aperture Refracting Telescope This is used to observe sunspots and equipped with photographic apparatus. On to Page 25 Back to Page 23Hi-Res Pic (162K) Back to Purple Mountain - Page 4 |
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Purple Mountain Observatory
24. 20 cm aperture Refracting Telescope This is used to observe sunspots and equipped with photographic apparatus. On to Page 25 Back to Page 23Hi-Res Pic (162K) Back to Purple Mountain - Page 4 |