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Technical Specification

The following table shows the main technical features of PRVS

Basic Instrument Performance
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%
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