Night Log 2012-04-20

SA: Tim
SO: Patrick
Others: charl, deon, hamish, peter

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Summary
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what began as a stormy evening gave way to a stable night with scattered clouds from time to time and decent seeing. lost some time at the beginning to alignment issues and then a couple hours to the slitmask mechanism getting very confused. in spite of that data was obtained for the following programs:

2011-3-RSA_OTH-024
2011-3-UW-002
2011-3-RSA_OTH-002
2011-3-RSA-003
2011-3-RSA_OTH-006
2011-3-RSA_UKSC_OTH-003
2011-3-POL-008

also obtained some gain calibration data for RSS in the early evening.