Upgrade and characterization of the OSIRIS imager detector

Characterization of an instrument’s detector is an essential part of assessing the overall performance and ca- pabilities of an instrument. We present our efforts to characterize the HAWAII-2RG detector on the imager component of the OSIRIS instrument at W. M. Keck Observatory. In particular, we will report the detector’s read noise, dark current, linearity, and persistence. We find a gain of 2.16 ± 0.34, in good agreement with Teledyne’s reported gain of 2.15. The maximum read noise of the detector is 23.4 ± 1.3 e - decreasing with an increasing number of reads. We find an upper limit on the dark current of the detector to be - /pix/s. The detector is also linear to the 1% level up to 44,500 e - and to the 5% level at 80,000 e - . The maximum well depth is measured to be 119,000 e - .