The following gain and read-noise values were provided by Rolf Jansen from his May 3–7, 2008 observing run. The were measured using Janesick's method from clean image sections within pairs of bias frames and dome flats at different exposure levels.

VATT4K; results for DETGAIN=2
Amplifier 3; for levels <37500 ADU Amplifier 4; for levels <37500 ADU vatt4K_2x2_DG2.gif
gain [e-/ADU] readnoise [e-] gain [e-/ADU] readnoise [e-]
3.720 ± 0.030 6.710 ± 0.051 3.715 ± 0.028 6.970 ± 0.070
    The gain values of the 2 amplifiers are matched to 1 : 0.999
 
Amplifier 3; for levels >39500 ADU Amplifier 4; for levels >39500 ADU
gain [e-/ADU] readnoise [e-] gain [e-/ADU] readnoise [e-]
3.220 ± 0.028 5.820 ± 0.056 3.250 ± 0.018 6.120 ± 0.061
    The gain values of the 2 amplifiers are matched to 1 : 0.999
 
VATT4K; results for DETGAIN=5
Amplifier 3; for levels <37500 ADU Amplifier 4; for levels <37500 ADU vatt4K_2x2_DG5.gif
gain [e-/ADU] readnoise [e-] gain [e-/ADU] readnoise [e-]
1.680 ± 0.005 6.230 ± 0.039 1.670 ± 0.006 6.500 ± 0.039
    The gain values of the 2 amplifiers are matched to 1 : 0.994
 
Amplifier 3; for levels >39500 ADU Amplifier 4; for levels >39500 ADU
gain [e-/ADU] readnoise [e-] gain [e-/ADU] readnoise [e-]
1.480 ± 0.014 5.480 ± 0.070 1.490 ± 0.009 5.840 ± 0.065
    The gain values of the 2 amplifiers are matched to 1 : 1.007


Last updated: May 31, 2008 [RAJ]