Table 4
Instrument parameters for calculating the photon noise level.
| Instrument | A [m] | Filter | λf [nm] | λmin [nm] | λmax [nm] | Q [%] | T campaign | Ref. |
|
|
||||||||
| TESS | 0.1 | – | 800 | 600 | 1000 | 80 | 80 days | 1 |
| CoRoT | 0.27 | – | 650 | 400 | 900 | 63 | 150 days | 2 |
| CHEOPS | 0.3 | – | 750 | 400 | 1100 | 67 | – | 3, 4 |
| PLATO 2.0 | 0.68 | – | 750 | 500 | 1000 | 50* | 2 years | 5 |
| Kepler | 0.95 | – | 660 | 420 | 900 | 50* | 4 years | 6 |
| HST ACS WFC | 2.4 | F555W | 541 | 458 | 621 | 35* | – | 7 |
| HST WFC3 IR | 2.4 | F125W | 1250 | 1100 | 1400 | 52* | – | 8 |
| JWST NIRCam | 6.5 | F115W | 1200 | 1000 | 1400 | 40* | – | 9 |
| JWST NIRCam | 6.5 | F140M | 1400 | 1300 | 1500 | 45* | – | 9 |
| E-ELT MICADO | 39 | J | 1258 | 1181 | 1335 | 60* | – | 10 |
Notes. A: aperture; Q: quantum efficiency; Tcampaign: observation period per target field for survey instruments. In most cases rough estimations were used. Reference numbers shown in the last column are explained in the footnote. In the cases of TESS and CHEOPS the quantum efficiencies are estimated based on the Q(λ) curves provided by the manufacturers. Asterisk indicates that instead of the quantum efficiency, the system throughput is presented.
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