Near-IR Wavefront Sensor - Performance
Throughput and Dichoic Choice
 |
nearIRWFS Dichroic reflectance to wavefront sensor.
|
 |
nearIRWFS Dichroic transmission to science instrument.
|
Magnitude Limit
Magnitude limits listed in this section are for the AO correction to deliver 0.1 arcsec FWHM in median conditions.
AO correction perfomance at the faint limit is strongly affected by atmospheric conditions, including turbulence coherence time.
Magnitude values are color-dependent for broadband wavefront sensing.
 |
Guide star magnitude limit.
|
| Filter |
Dichroic |
|
K |
YJH50 |
YJH90 |
Vis-HK |
| Y-band |
mY=11.2 |
mY=10.4 |
mY=8.7 |
mY=11.2 |
| J-band |
mJ11.3 |
mJ=10.6 |
mJ=8.8 |
mJ=11.3 |
| H-band |
mH=11.4 |
mH=10.7 |
mH=8.9 |
N/A |
| Y+J-band |
mJ~12.2 |
mJ~11.5 |
mJ~9.7 |
mJ~12.2 |
| J+H-band |
mH~12.3 |
mH~11.6 |
mH~9.8 |
N/A |
| broadband |
mH=12.8 |
mH=12.1 |
mH=10.3 |
mH=12.2 |
File ./020instrument.web/030nearIRwfs.web/020performance.web/content.html last modified 26/07/2023 19:19:39 HST
