The GMOS South detector array consists of three 2048x4608 EEV chips arranged in a row. The table below gives a summary of the current detector/controller characteristics.

* Dark current measured at -113C by Gemini Observatory.
** Saturation can be avoided by assuming 100ke- for all chips
*** (peak-valley)/mean, measured from images taken at Gemini

Readnoise and Gain Values

The table below gives the gain/read-noise values for the current GMOS EEV CCDs measured in September 2006 after a replacement of the video boards installed in the SDSU controller. Only the setting for the best amplifiers are listed (3-amp mode). The normal setting for science observations is slow read and low gain. For the full table of read-noise and gain values at all settings and for all amps, click here. Note: GMOS South data obtained before September 1, 2006 should use the previous gain/read-noise values.