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12 September 2011
- 06:0206:02, 12 September 2011 diff hist 0 N File:Telescope optics.jpg No edit summary current
- 06:0206:02, 12 September 2011 diff hist 0 N File:Spoke sm.jpg No edit summary current
- 06:0106:01, 12 September 2011 diff hist 0 N File:Resolution sm.jpg No edit summary current
- 06:0106:01, 12 September 2011 diff hist 0 N File:Eye optics.jpg No edit summary current
- 06:0106:01, 12 September 2011 diff hist 0 N File:Cross and spot.jpg No edit summary current
- 06:0006:00, 12 September 2011 diff hist +35 Light and Telescopes No edit summary
- 05:5705:57, 12 September 2011 diff hist +18,534 N Light and Telescopes Created page with " == Introduction == Until photography was developed at the beginning of this century, the eye was an astronomer’s primary instrument. With it we discovered the Sun, the large..."
- 04:2104:21, 12 September 2011 diff hist +76 Elementary Astronomy Laboratory Activities No edit summary
- 04:1804:18, 12 September 2011 diff hist +31 Our Dynamic Sun No edit summary
- 04:1604:16, 12 September 2011 diff hist +7 Our Dynamic Sun No edit summary
- 04:1404:14, 12 September 2011 diff hist +2 Our Dynamic Sun No edit summary
- 04:1304:13, 12 September 2011 diff hist −2 Our Dynamic Sun No edit summary
- 04:1204:12, 12 September 2011 diff hist +3 Our Dynamic Sun No edit summary
- 04:1204:12, 12 September 2011 diff hist 0 N File:980803 1905 mwlt sm.jpg No edit summary current
- 04:0904:09, 12 September 2011 diff hist +155 Our Dynamic Sun No edit summary
- 04:0504:05, 12 September 2011 diff hist +111 Our Dynamic Sun No edit summary
- 04:0204:02, 12 September 2011 diff hist +52 Our Dynamic Sun No edit summary
- 04:0104:01, 12 September 2011 diff hist +1 Our Dynamic Sun No edit summary
- 04:0004:00, 12 September 2011 diff hist 0 N File:Sunsize4.jpg No edit summary current
- 04:0004:00, 12 September 2011 diff hist 0 N File:Sunsize3.jpg No edit summary current