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IRCS instrument parameters
(1) For full array size (1K x 1K)
* Readout noise for frame = [Readout noise per NDR] / sqrt(NDR)
|
Camera |
Spectrograph |
| Detector |
ALADDIN III 10242 InSb array |
ALADDIN III 10242 InSb array |
| Pixel size |
27 um |
| Resolution | Fine (12 mas) | High (20 mas) | Low (52 mas) | (slit-length direction) x (slit-width direction) |
| Pixel scale |
w/o
AO |
N/A | 20.42+/-0.07 mas | 52.42+/-0.07 mas |
54.57 mas
x 67.75 mas |
| w/ AO | 11.94+/-0.01 mas | 20.57+/-0.04 mas | 52.77+/-0.04 mas | 54.93 mas x 68.20 mas |
| Field of view | w/o AO |
N/A | 20.91"2 | 53.68"2 |
3.5-9.4'' in slit-length |
| w/ AO | 12.22" 2 | 21.06"2 | 54.04"2 |
| Gain |
5.6 e-/ADU |
3.8 e-/ADU |
| Dark current |
0.1 e-/s |
0.05 e-/s |
| Read noise per NDR |
43 e- rms |
68 e- rms |
| Saturation level |
123 000 e- |
129 000 e- |
| Readout rate(1) |
0.41 s (standard) |
| 0.12 s (fast) |
[note: If you need old parameters
before July 2005 when IRCS was mounted on Cassegrain focus, please
see old parameter page.]
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