Marconi2 Parameters with UltraDAS + SDSU Gen.2
NB these figures refer to Marconi2 when it
was used with a Gen. 2 controller. Converted to Gen. 3 on the 29th May 2007
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) | 1386 | 726 |
| Gain(e/ADU) | 1.1 | 2.2 |
| Noise(e) | 3.5 |
5.0 |
| Noise (ADU) | 3.2 | 2.3 |
| Linear to(ADU) {also see graphs below} |
57K | 62K |
| Readout time(s) | 63 | 42 |
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 |
This page last updated : 14th December 2006
awr@ing.iac.es
