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Table 1

Log of observations.

Band Date Total exposure time (s)

IC 9/10 April 2008 1428
10/11 April 2008 1904
3/4 June 2008 8568
5/6 June 2008 5712
6/7 June 2008 3094
J 28/29 April 2008 6000
19/20 July 2008 6000
H 28/29 April 2008 5400
19/20 July 2008 5400
KS 28/29 April 2008 2700
19/20 July 2008 2700
CH4 29/30 April 2008 8400
1/2 May 2008 2800
7/8 July 2008 2800
19/20 July 2008 2800
21/22 July 2008 2760
22/23 July 2008 2800
29/30 July 2008 2800
30/31 July 2008 5680

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