The current detector is a Hawaii-2 array fabricated by Teledyne Imaging Sensors (FPA number 109). The measured properties of the science detector array are given in the table below. The FLAMINGOS-2 dark current is set by the properties of the HAWAII-II array. The quantum efficiency of the array as measured by Teledyne is 65.6% at J and 49.8% at K.

The read noise of FLAMINGOS-2 is a function of both the HAWAII-II chip and the MCE-4 electronics. The mean RMS read noise for a single CDS pair, referenced to a single read, is between 11.6 e^- to 14.3 e^- depending on the VRESET value used. For multiple reads, the read noise drops more slowly than 1/√(nreads), which is the theoretical ideal expectation; this is in keeping with the results of other groups with HAWAII-II Fowler sampling. An effective read noise of <5 e^- RMS is achieved for nreads of 8 or higher.

The array linearity is illustrated in this plot, which shows the linearity of laboratory data obtained in the K_s band. The FLAMINGOS-2 detector/electronics response is linear to <0.5% over the range from ~4000 ADU to ~21,000 ADU. Saturation is reached at ~35,000 ADU.