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 |
4.8 |
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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