FIES read-out times CCD15

Amplifier	Binning	Read speed	Read-out time (sec)
B	1x1	100	46
B	2x2	100	16

Notes:

• B amplifier with speed 100 gives the best RON (~3.3 e-). For the moment i see no reason to offer other readmodes. JHT

FIES read-out times CCD13 (decommissioned!)

Amplifier	Binning	Read-out time (sec)
A or B (single)	1x1	90
A or B (single)	2x2	30
A and B (dual)	1x1	45
A and B (dual)	2x2	15

Notes:

• The default readmode uses the B amplifier.

• The A and B amplifier gains and bias levels are not exactly equal, but proper spectral reduction for AB-mode dual readout is possible.

  For Xbin=2 together with AB-mode dual readout the two central CCD columns are not recorded in the image:
  the central echelle order (around 4450-4550Å) is difficult to reduce, and spectral coverage may have a gap in this order.

• For CCD13 the default binning is 1x1, however for the low-res fiber (R=25000) we advise to use 2x2 binning.