NTT / SUSI2 / CCD # 45 & 46

TYPE	Two EEV CCD 44
	Thin, back-illuminated, AR coated
IMAGE SIZE [pixels]	4096 x 2048 ( 50 prescan pixels)
PIXEL SIZE [microns]	15 x 15
DARK CURRENT [e- / pixel / hr]	< 12 at 150 °K
FULL WELL CAPACITY	150 k
CONTROLLER	FIERA
Mode [kpixels / sec]	166
R.O.N. [e- rms]	CCD # 45: 4.7
	CCD # 46: 4.6
CONVERSION FACTOR [e- / ADU]	CCD # 45: 2.24
	CCD # 46: 2.26
Full Frame READOUT TIME [sec]	Unbinned (4k x 4K)	2 x 2 binned (2k x 2K)	3 x 3 binned (1.36k x 1.36K)
	56.3 sec	16.4 sec	8.8 sec

Saturation and Linearity: Pixel saturation occurs at ~ 150000 e-. With the adopted gain of 2.25 e- /ADU this corresponds approximately to the full rang e of the ADC converter in the unbinned mode.

The CCDs have been found linear within ± 0.15% over the full range 0-60000 ADUs.

nm	350	400	500	600	700	800	900	1000
QE (%)	76	90	84	80	68	48	23	4

NTT / SUSI2 / CCD # 45 & 46

CCD QE: Measurements of the Qes for the two chips in the ESO detector laboratory show that # 45 is up to 5% relatively more efficient than # 46. The table below gives the average values: