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Noise ( old) |
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GMOS-South Detectors : Gain and Readnoise (Old) 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 the 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) |
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CCD | Rate | Amp | Gain | Noise | Gain | Noise | Gain | Noise | Gain | Noise |
1 | F | L | 5.29 | 6.33 | 2.51 | 4.94 |
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1 | F | R | 5.27 | 6.28 | 2.47 | 4.81 |
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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 |
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2 | F | R | 5.03 | 8.41 |
2.38 |
5.25 |
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2 | S | L | 4.38 | 4.69 |
2.07 |
3.69 |
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2 | S | R | 4.65 |
5.46 |
2.13 |
3.93 |
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3 | F | L | 4.88 | 6.92 | 2.32 | 4.99 |
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3 | F | R | 4.90 | 6.20 | 2.28 | 4.58 |
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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 |
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Ave | S | | 4.62 | 5.01 | 2.19 | 3.81 |
Rate: S=SLOW, F=Fast
Last update August 17 2007: Rodrigo Carrasco