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RX J1643.7+3402, 60s exposure, TKUCO 0.32 m f/4.8, ST-7E camera C1 = GSC 0258501631
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| April 10/11, 2002. Mostly clear, moderate breeze. Fair conditions. |
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| April 18/19, 2002. Clear, calm and cool - very good conditions. Scatter approx 0.01 mag |  |
| April 19/20, 2002. Clear, moderate to strong breeze and aurora - at times intense and covering entire sky. Scatter approx 0.026 mag throughout night. |  |
| April 24/25, 2002. Clear and calm (T = -8C). Moon nearing full - sky bright but otherwise very good conditions. Scatter (C2-C1) approx 0.012 mag. |  |
| April 26/27, 2002. Very good conditions but bright moon. Scatter approx 0.015 mag. |  |
| April 29/30, 2002. Clearing near midnight - exceptionally clear until 2h (MDT). Scatter < 0.009 mag |  |
| May 4/5, 2002. Short run, scatter < 0.009 mag |  |
| May 7/8, 2002. Long run under good conditions. Scatter (C2-C1)<0.014 mag |  |
