Table 9.
Estimated uncertainties (3σ) of gold-point measurement (see sections cited in parentheses for details)
| Quality | Uncertainty |
|---|---|
| Composite random uncertainty (6.6) | 0.30% |
| Least-squares fit (6.7) | 0.17% |
| Blackbody emissivity (4.2) | 0.01% |
| Polarization (4.3) | 0.02% |
| Far-wing bandwidth correction (4.4) | 0.04% |
| Detector responsivity [silicon (4.5) or ECR (4.6)] | 0.20% |
| Detector linearity (4.8) | 0.10% |
| Diffraction (5.2.4) | 0.02% |
| Slit-scattering function correction fσ (6.1) | 0.06% |
| Apparatus function correction fH (6.2) | 0.03% |
| Sphere non-uniformity correction <ℓLS> (6.3) | 0.09% |
| Geometric extent, GD (6.4) | 0.15% |
| Total radiance uncertainty (added in quadrature) | 0.45% |
| Gold-point temperature uncertainty [from eq (10), at 600 nm] | 0.34 K |