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Marconi2 Parameters with UltraDAS + SDSU Gen.3

Device Identification

Chip name Marconi2
Year of manufacture 2002
Serial number 9434-16-4
First light on La Palma May 2002
Description Grade 1 Deep Depletion low fringeing CCD with 550nm AR coating, see image.

Operational Characteristics

    Speed  Slow Fast
    Bias(ADU) 1460 700
    Gain(e/ADU) 1.14 2.3
    Noise(e) 3.5
    Noise (ADU) 3 2.1
    Linear to(ADU) 
    {also see graphs below}
    65K 65K
    Readout time(s) 51 31


Windowing first 50 columns are noisy.

Binning there is no increase in noise up to 4x4.

Vertical CTE 0.999997
Horizontal CTE  0.999998

Physical Characteristics

X Pixel size 13.5 microns
Y Pixel size 13.5 microns
X size in pixels of digitised area 2148
Y size in pixels of digitised area 4700
X size of useful imaging area 2047
Y size of useful imaging area 4611
X start of useful imaging area 51
Ystart of useful imaging area 1
LN2 capacity of cryostat 2.5 litres
Cryostat window thickness 4 mm
Distance from window to CCD 11 mm measured optically
Cryostat window size 30 mm x 60 mm

Operational Parameters

Flooding type none
Operating temperature 168K
Preferred amplifier Left hand

Measured Characteristics

Dark current 3e per hour, measured 1 hour after power-up.
Cosmetics No dark or bright columns
Fringing See graph of fringe amplitude vs wavelength

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Last modified: 21 November 2010