HDS instrument parameters

Detectors	2 2K x 4K CCDs (EEV CCD42-80)
Pixel size	13.5 um
Pixel scale	0.138 ''/pixel
Gain	1.7 e^-/ADU
Dark current	10 e^-/hr
Read noise	9 e^- rms (with Messia4, - Mar/2004) 4.4 e^- rms (with Messia5, Mar/2004 -)
Saturation level	50 000 e^- (with Messia4, - Mar/2004) 80 000 e^- (with Messia5, Mar/2004 -)
Linearity	See here.
Total Dead Time for Readout (Binning mode [spatial x dispersion])	86s (1 x 1) 60s (2 x 1) 44s (2 x 2) 36s (2 x 4) 33s (4 x 4)
Min. exposure time	1 s
Slit-resolution product	36 000 arcseconds
Slit width	0.2 - 4''
Slit length	2 - 60''