UVES Scientific CCD System

The Blue Scientific CCD - "PAVAROTTI"

(see also The Blue Scientific CCD "MARLENE" before the upgrade on 13/Oct/2004)

CCD Specification

CCD alias name :	PAVAROTTI
Type :	EEV CCD-44, backside illuminated, AR coated
Number of pixels :	[H] 2048, [V] 4102
Number of outputs :	2
Pixel size :	15 x 15 microns

Cosmetic and Flat field images

Click here to see the Flat field images.

Linearity

Minimum specification:	1 %

Peak to peak non linearity:	0.63 %

Click here to see the graphics for the linearity.

Dark Current

Exposure time:	3.600 s
Readout mode:	50 kpix/s
Port:	right
Minimum specification:	2 e^-/pixel/hour

Dark current:	< 0.1 ± 0.1 ADU/pixel/hour
	< 0.15 ± 0.15 e^-/pixel/hour

Click here to see the Bias and Dark images.

Charge Transfer Efficiency (CTE)

Method used:	Fe55
Minimum specification:	0.999995

CTE serial (horizontal) left:	0.999993
CTE serial (horizontal) right:	0.999991
CTE parallel (vertical):	0.99999927

CTE measured at 50 kpix/s and the high gain amplification.

Full Well

Full well is more then 100.000 electrons.

Readout Direction

In dispersion direction.

Quantum Efficiency @ Temperature : -117 °C

Clock mode:	225 kHz/4 ports/low gain/512
Conversion factor:	3.1600 e^-/ADU ± 0.02793 for 24726 ADU
Rms noise:	4.6647 e^- ± 1.066

Wavelength [nm] QE [%] PRNU [rms %]

300 46.5 2.8

310 70.5 2.3

320 68.3 1.9

330 70.9 1.8

340 72.7 1.6

350 72.9 1.6

360 72.6 1.6

370 75.1 1.4

380 80.1 1.2

390 83.6 1.0

400 85.7 0.9

420 87.1 0.8

440 87.0 0.8

460 86.1 0.7

480 84.6 0.7

500 83.3 0.7

520 82.3 0.7

540 81.3 0.7

550 81.3 0.7

560 80.7 0.7

580 80.0 0.7

600 79.2 0.7

620 78.2 0.7

640 76.7 0.7

650 72.5 0.7

Wavelength [nm] QE [%] PRNU [rms %]

660 74.5 0.7

680 72.1 0.8

700 69.4 0.8

720 66.3 0.9

740 62.5 0.9

760 58.1 1.0

780 53.9 1.1

800 49.3 1.3

820 44.1 1.7

840 38.8 1.8

860 33.9 2.0

880 28.9 2.2

900 24.4 2.2

920 19.2 2.2

940 14.46 1.6

960 10.7 1.6

980 7.1 2.5

1000 4.1 3.2

1020 2.0 3.9

1040 0.6 5.1

1060 0.3 5.7

1080 0.2 6.0

1100 0.1 7.0

Click here for a Comparison of QE performance of the previous CCD "MARLENE" and the new CCD "PAVAROTTI".

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Last update: Jan 27, 2010
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