Table 5
Initial NISP in-flight performance estimates.
Filter | rEE50 | rEE80 | FWHM | ZP | Lim. sens. |
---|---|---|---|---|---|
YE | 0.″22 | 0.″37 | 0.″35 | 24.95 | 24.6 |
JE | 0.″24 | 0.″45 | 0.″34 | 25.19 | 24.6 |
HE | 0.″27 | 0.″55 | 0.″35 | 25.11 | 24.5 |
BGE | 0.″21 | – | – | – | N.A. |
RGE | 0.″24 | – | – | – | ~2×10–16 |
Notes. Initial in-flight estimates of PSF 50% and 80% energy radii, PSF FWHM, AB-mag zeropoints (for 1 e– s–1), and limiting sensitivities for the three photometric and two spectroscopic passbands of NISP, where available. Photometry sensitivity is given in AB-mag for 5σ-detections of point-sources using a model fit. For red grism spectroscopy this is a 3.5σ-detection of a point-source line with a putative width of one resolution elements that is two pixels of each 13.4 Å, given in erg s–1 cm–1. For the blue grism a limiting sensitivity was not yet available. Both throughputs and limiting sensitivities are snapshots at the time of writing and might change over time as both the instruments and image reduction pipeline evolve.
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