GMOS-South Detectors : Gain and Readnoise values

The table below gives gain/read-noise values for the current GMOS EEV CCDs measured in September 2006 after the replacement of the video boards installed in the SDSU controller. High and low gain settings for the best amplifiers (3-amp mode) are highlighted for both slow and fast readout modes. Note: GMOS South data obtained before September 1, 2006 should use the previous gain/read-noise values.

SDSU Gain number			1 (High)		2  (Low)		5 (High)		6 (Low)
CCD	Rate	Amp	Gain	Noise	Gain	Noise	Gain	Noise	Gain	Noise
1	F	L					5.054	6.84	2.408	4.49
1	F	R					5.253	6.54	2.551	5.07
1	S	L	4.954	5.70	2.372	3.98
1	S	R	4.862	5.19	2.403	4.01
2	F	L					5.051	7.35	2.295	4.42
2	F	R					4.954	11.37	2.288	5.03
2	S	L	4.532	4.81	2.076	3.85
2	S	R	4.592	4.96	2.131	3.83
3	F	L					4.868	8.56	2.264	4.63
3	F	R					4.833	7.88	2.260	4.09
3	S	L	4.381	4.81	2.056	3.27
3	S	R	4.411	4.34	2.097	3.16
Ave	F						5.002	8.09	2.344	4.622
Ave	S		4.622	4.968	2.189	3.683

Rate: S=SLOW, F=Fast

Last update August 17 2007: Rodrigo Carrasco