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Previous GMOS-S Gain and Read Noise Values

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The table below gives the gain/readnoise values for the  GMOS EEV CCDs  operating with the SDSU controller. These values should be used to reduce GMOS South data obtained before September 1, 2006. High and low gain settings for the best amplifiers (3-amp mode) are highlighted for both slow and fast readout modes.

SDSU Gain number 1 (High)
2  (Low)
 5 (High)
 6 (Low)
CCDRateAmp Gain Noise Gain Noise Gain Noise Gain Noise
1 F L



5.29
 6.33
 2.51
 4.94
1 F R



5.27
 6.28
 2.47
 4.81
1 S L 4.92 5.13
 2.33
 3.97
1 S R 4.98
 5.48
2.46
 4.28
2 F L



5.03
 6.14
 2.32
 4.73
2 F R



5.03 8.41
 2.38
 5.25
2 S L 4.38 4.69
2.07
 3.69



2 S R 4.65
 5.46
2.13
 3.93



3 F L



4.88
 6.92 2.32
 4.99
3 F R



4.90 6.20
 2.28
4.58
3 S L 4.43
 4.85
 2.08
 3.65
3 S R 4.36
 4.45
2.07
 3.31
Ave F




5.07
6.71
2.38
4.88
Ave S
4.62
5.01
2.19
3.81

Rate: S=SLOW, F=Fast



Last update August 17 2007: Rodrigo Carrasco