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GMOS-N Gain and Read Noise Values (Hamamatsu)

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The table below gives gain/read-noise values for the current GMOS-N Hamamatsu CCDs measured in May 2017. (The gain is given in electrons/ADU. Readnoise is given in electrons.)

Note: GMOS-N data obtained with the previous E2V dd devices should use the corresponding E2V dd gain/readnoise values.

SDSU Gain number

Normal Science

mode (2)

Acquisition

mode (6)

Bright target 

mode (5)

CCD

Sci

Ext 

Amp. name Gain Noise Gain Noise Gain Noise
1 1 BI13-20-4k-1,4 1.66 4.06  2.01  8.02  5.21 9.90
1 2 BI13-20-4k-1,3 1.63 4.12  1.95 6.88 5.18 8.94
1 3 BI13-20-4k-1,2 1.62 4.12 1.97 6.01 5.05 8.75
1 4 BI13-20-4k-1,1 1.57 3.99 1.91 5.88 5.04 8.17
2 5 BI12-09-4k-2,4 1.68 4.20 2.03 6.71  5.29 9.42
2 6 BI12-09-4k-2,3 1.65 3.98 1.97 6.34  5.13 8.91
2 7 BI12-09-4k-2,2 1.64 3.88 1.96 5.39  5.14 8.19
2 8 BI12-09-4k-2,1 1.68 4.20 2.01 5.86  5.29 8.84
3 9 BI13-18-4k-2,4  1.61 4.04 1.95 6.10 5.03 8.13
3 10 BI13-18-4k-2,3  1.63 4.35 1.95 6.13 5.10 8.53
3 11 BI13-18-4k-2,2 1.58 4.02 1.89 5.98 4.86 8.03
3 12 BI13-18-4k-2,1 1.65 4.55 1.95 6.79  5.09 8.80
Ave      1.63 4.13  1.96 6.34  5.12  8.72

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