Additional measurements for CCD #61

Dark Current measurements (normal mode, binning XxY=1x1):

15 September 2000	1.8 ± 0.3 e/px/hr
14 October 2000	2.8 ± 0.4 e/px/hr
15 October 2000	2.7 ± 0.4 e/px/hr
04 February 2001	2.4 ± 0.2 e/px/hr
13 December 2001	1.3 ± 0.2 e/px/hr
19 January 2002	1.8 ± 0.8 e/px/hr
05 September 2004	1.6 ± 0.6 e/px/hr
18 March 2005	2.9 ± 0.3 e/px/hr

Dark Current measurements (normal mode, binning XxY=4x1):

16 October 2000	9.4 ± 0.3 e/px/hr
09 January 2005	10.4 ± 0.5 e/px/hr

Note:

The determination of the dark current corrects for the instability of the bias as seen in the overscan region of the frames.

Cosmic ray hit rate:

27 January 2001	6.2e-05 ± 0.4e-05 hits/px/hr
04 February 2001	3.9e-05 ± 0.6e-05 hits/px/hr
13 December 2001	3.1e-05 ± 0.4e-05 hits/px/hr
19 January 2002	7.0e-05 ± 0.8e-05 hits/px/hr

Last update: 20 March 2005 Comments to ls-ces@eso.org