LIRIS Detector
The LIRIS detector is a 1024x1024 HgCdTe HAWAII array,
manufactured by Rockwell Scientific Corporation. The main characteristics of the LIRIS detector are summarized below.
More detailed descriptions can be found at the ING detector page and in the
report of IAC.
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LIRIS detector properties |
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Detector size |
1024 x 1024 pixels |
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Full-well capacity |
100000-150000 e- |
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Spectral range |
0.85-2.5 μm |
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Quantum efficiency |
90% (K), 80% (J) |
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Readout noise (CDS) |
< 10 e- |
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Readout noise (MNDR) |
< 3 e- |
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Gain |
3.5-3.7 e- / ADU |
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Pixel size |
18.5 μm |
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Pixel scale |
0.250" / pixel |
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Field of view |
4.27' x 4.27' |
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Bad pixels |
~1.5%, almost all of them located at the very detector edges |
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Linearity |
< 2% within 25000 ADU, drop to 15% within 35000 ADU. For very low illuminations (few 100 ADU), the detector is undersensitive (see the linearity over the 4 sections of the detector here).
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Charge persistency |
< 1%, disappears after two or three detector reads |
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Saturation limit |
45000 ADU (before Dec. 2006: 35000 ADU) |
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Dark current |
~ 0.065 e-/s at 83 K |
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Readout time |
0.9 s |
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