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