Technical Specification
The following table shows the main technical features of PRVS
Parameter | Predicted |
---|---|
Radial Velocity Error (instrumental) | 0.5 m/s (primarily from opto-mechanical stability, centring and guiding and spectral response function error) |
Sensitivity | Y=12.00, J=11.44, H=10.91, S/N =300 in 3600 s |
Observational Efficiency | 80% in 3600 s (based on integral acquisition system) |
Spectral Resolving Power | 70,000 |
Sampling | 2.5 pixel |
Simultaneous wavelength Coverage | 90% of Y+J+H bands (not including telluric mask) |
Instrument SRF stability | Drift: < 0.01pixel (±0.05K) Skewness: ± 0.001 (±0.05K) |
Throughput | 10% |
Field of View | 1.4” |
Instrument Background | < 0.1 e/s (if no persistence) |
Acquisition and guiding | < 0.1” |
Guiding sensitivity | Z>14.8 for S/N=50 in 1 s |
Image quality at fibre | 50%EED = 1 pixel |
Image quality at detector | 50%EED=0.5 pixel |
Array Cosmetic Quality | <1% |