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QUCAM2 Parameters with UltraDAS + SDSU Gen.2NB these figures refer
to QUCAM2 when it was used with a Gen. 2 controller. Converted to Gen. 3 on
the 8th March 2007
Device Identification
|
| Chip name | QUCAM2 |
| Year of manufacture | 2005 |
| Serial number | 04122-17-01 |
| First light on La Palma | May 2005 |
| Description | E2V CCD201-20-4-122 Thinned midband AR coated. L3 electron multiplying
CCD. Camera Picture |
Operational Characteristics
| Speed | Fast |
Slow |
| Bias(ADU) | 2030 |
2100 |
| Gain(ADU/e) | 74 |
10 |
| Read Noise(e) | 0.08 |
1 |
| Linear to(ADU) |
40K (see graph ) |
40K (see graph ) |
| L3 Gain |
340 |
45 |
Windowed readout times as follows:
[timings made using the 'rsrun' command]
| Window size |
Fast |
Slow |
| Full frame |
2.4 |
2.4 |
| 150 x150 window |
150 ms |
150 ms |
| 250 x 250 window |
320 ms |
320 ms |
| 500 x 500 window |
1 s |
1 s |
Windows smaller than 150 x 150 pixels are not recommended because
of bias gradients in the first 30 rows and columns of the window
Windowing : one window only
Binning : No
Physical Characteristics
| X Pixel size | 13 microns |
| Y Pixel size | 13 microns |
| X size in pixels of digitised area | 1072 |
| Y size in pixels of digitised area | 1050 |
| X size of useful imaging area | 1024 |
| Y size of useful imaging area | 1024 |
| X start of useful imaging area | 33 |
| Ystart of useful imaging area | 8 |
Operational Parameters
| Operating temperature |
173K (requires 3 hour cool down to stabilise
at operational temp, important for gain stability) |
| Preferred Amplifier |
Right |
Measured Characteristics
| Dark Current |
4e/pix/hour
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Cosmetics : low level defects in columns 190 and 742 (see image of 5 added 30 second dark frames)
Some papers describing the use of L3 CCDs see this link
Sample Images and Observing tips for L3 Cameras see this link
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