|
IRMS |
Ref. |
| Effective Collecting Area |
630 m2 |
|
| Pixel Scale |
0.06 arcsec/pix
(=60mas) |
1
2 |
| Strel Ratio |
N/A |
|
| Diffraction Limit |
2.44λ/D
0.021″@J
0.027″@H
0.036″@K |
2 |
Ensquared Energy
inside Aperture |
w/NFIRAOS wide-field mode
@ Center of FOV
0.70@J
0.75@H
0.80@K
@ 2' edge
0.43@J
0.52@H
0.6@K
Slit width=160mas
0.65@J
0.73@H
0.80@K |
AO |
| Imaging Thruput |
0.348@J
0.340@H
0.255@K |
2
3 |
| Spectrograph Thruput |
0.2262@J
0.255@H
0.21@K |
2
3 |
| Readout Noise |
5 e- (H2RG) |
2
3 |
| Dark |
0.03 e-/s (H2RG) |
1
3 |
| Background |
Sky brightness
@MaunaKea
J=16.1 mag
H=13.8 mag
K=14.8 mag |
1 |
| Exposure Time |
18000s (900s x 20) |
1 |
| Spectral Resolution |
5000 |
2 |
