Time: MST

8:00pm - 9:15pm Stars are very elongated even in the center of the field. Science operation team strongly suspects this is the secondary mirror problem. Science operation team fixed the problem around 9:10pm, although some distortions still could be seen beyond 2arcsec radius from the center.

9:25pm- 10:40pm acquisition and 1-hour exposure on sn2005bf.

10:50pm- 12:20pm acquisition and exposure on Zheng's mask. Seeing unstable, back and forth from 0.9- 1.7. Finish 2x30min+ 1x15min.

12:20pm -- Close telescope for wind

-- Main. Zheng Cai - 16 May 2013
Topic revision: r1 - 16 May 2013, XiaohuiFan
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