For general information about Infrared
Arrays, please read chapter
2 of
Martin Beckett's thesis or here.
Camera | ARNICA | FAST | WHIRCAM | CIRSI | INGRID | LIRIS |
Pixels | 256×256 | 58×62 | 256×256 | 4*(1024×1024) |
1024×1024 |
1024×1024 |
Pixel size | 40µ (0.35 arcsec) | (0.5 arcsec)
| 30µ (0.24 arcsec) | 18.5µ |
18.5µ(0.25 arcsec) |
18.5µ(0.25 arcsec) |
Array | HgCdTe NICMOS-3 | InSb |
SBRC InSb | Rockwell HgCdTe HAWAII |
Rockwell HgCdTe HAWAII |
Rockwell HgCdTe HAWAII |
Field of View | | 0.50' (WHT
f/11) | 1.02'×1.02' (WHT f/11) | 20.9'×20.9' (WHT f/2.8)
29.64'×29.64' (INT f/3.3) |
4.27'×4.27'(WHT f/11) |
4.27'×4.27'(WHT f/11) |
Readout noise | 40-60e- | <280e-
| 40-55e- | |
37-65e- |
3-10e- |
Dark
current | <1e- |
50e-/second |
10e-/s |
|
|
~ 0.065 e-/s |
Spectral range | 0.9 - 2.5µ | 1.4-2.4µ
| 0.8-2.3µ | 0.8-2.5µ |
0.8-2.5µ |
0.8-2.5µ |
Peak Quantum Efficiency | | |
80% | 64% | |
QE @ J band (1.28µ) | | | 80% | 58%
| 58% |
80% |
QE @ H band (1.67µ) | | | 80% |
58% | 58% |
QE @ K band
(2.00µ) | >65% | 20% | 80%
| 63% |
62% |
90% |
QE @ Ks band (2.20µ) |
| | 80% | 63% | |
First commissioning | December 1993 | July
1991 | February 1995 | December 1997 |
March 2000 |
February 2003 |
Retired from service |
|
|
1998 |
Temperature | 60K | 6K |
30K | 77K |
70K |
70K |
Full-well capacity | 250,000e- |
|
|
|
148,400-179,200 e- |
100,000-150,000 e- |
Figure 1. Evolution of optical CCDs and infrared arrays at ING in terms of detection efficiency (=Peak Quantum
Efficiency(%)/Typical Readout Noise(e-)) [ JPEG | TIFF ].
|