UVES Scientific CCD System

Calibrated Readout Modes Available at the Telescope

UVES Blue Arm CCD (before the upgrade on 13/Oct/2004)

Device :		EEV CCD-44-82 "MARLENE"

CCD carrier temperature :		135 K ( accoustic alarms set at 133 and 140 K )
CCD operating temperature :		- 118 °C ( est. )
Cold plate temperature :		- 180 °C

Read out units 225_lg_1x1_1pt 225_lg_1x2_1pt 50_hg_2x2_1pt 50_hg_2x3_1pt

Port used - left left left left

Conversion factor e^- / ADU 2.04 2.04 0.58 0.58

Readout noise e^- 3.90 3.90 2.14 2.14

Dark current
(system up and dark > 24 h) e^- / pix / h - - 1.0 (1^st 1 h dark)
0.5 (2^nd 1 h dark)
0.4 (12^th 1 h dark) 1.0 (1^st 1 h dark)
0.5 (2^nd 1 h dark)
0.4 (12^th 1 h dark)

Bias level ADU 196 196 146 146

Linearity % + 0.57 / - 0.55 + 0.57 / - 0.55 + 0.42 / - 0.34 + 0.42 / - 0.34

Cosmic ray hit rate
(events > 30 e^-) hits / cm² / h 114 114 100 100

CTE (X) - > 0.999999 @ 10⁵ e^- > 0.999999 @ 10⁵ e^- > 0.999997 @ 3 x 10⁴ e^-
> 0.999980 @ 3 x 10³ e^- > 0.999997 @ 3 x 10³ e^-
> 0.999980 @ 3 x 10³ e^-

Back to "UVES Scientific CCD System"

Send comments to <odt@eso.org>
Last update: Jan 27, 2010
Webdesign by EVI

Read out	units	225_lg_1x1_1pt	225_lg_1x2_1pt	50_hg_2x2_1pt	50_hg_2x3_1pt
Port used	-	left	left	left	left
Conversion factor	e^- / ADU	2.04	2.04	0.58	0.58
Readout noise	e^-	3.90	3.90	2.14	2.14
Dark current (system up and dark > 24 h)	e^- / pix / h	-	-	1.0 (1^st 1 h dark) 0.5 (2^nd 1 h dark) 0.4 (12^th 1 h dark)	1.0 (1^st 1 h dark) 0.5 (2^nd 1 h dark) 0.4 (12^th 1 h dark)
Bias level	ADU	196	196	146	146
Linearity	%	+ 0.57 / - 0.55	+ 0.57 / - 0.55	+ 0.42 / - 0.34	+ 0.42 / - 0.34
Cosmic ray hit rate (events > 30 e^-)	hits / cm² / h	114	114	100	100
CTE (X)	-	> 0.999999 @ 10⁵ e^-	> 0.999999 @ 10⁵ e^-	> 0.999997 @ 3 x 10⁴ e^- > 0.999980 @ 3 x 10³ e^-	> 0.999997 @ 3 x 10³ e^- > 0.999980 @ 3 x 10³ e^-