Table 3 Sensitivity factors at the reference temperature (TCCD, T = − 30 °C), and errors for the band ratios from stellar observations
From: Inflight calibration of the optical navigation camera for the extended mission phase of Hayabusa2
Sensitivity (DN/s)/(W/m2/µm/sr) at TCCD, T = -30 °C | ||||||||
|---|---|---|---|---|---|---|---|---|
| Â | Filters | ul | b | v | Na | w | x | P |
Before TD1a | Sensitivity | 439.1 ± 2.2 | 969 ± 7.9 | 1175.0 ± 10.0 | 546.9 ± 2.0 | 1515.0 ± 19.3 | 1499.8 ± 24.6 | 961.2 ± 28.8b |
After TD1 | Sensitivity | 410.1 ± 11.6 | 899.1 ± 22.2 | 1092.8 ± 25.5 | 510.9 ± 12.2 | 1418.9 ± 35.1 | 1405.8 ± 40.7 | 898.9 ± 39.8 |
After TD2 | Degradation trend | − 0.000252 day−1 | ||||||
Sensitivity at TD2 | 399.7 ± 10.8 | 879.6 ± 22.1 | 1071.2 ± 25.0 | 498.3 ± 11.9 | 1380.5 ± 34.0 | 1373.5 ± 37.4 | 882.6 ± 38.9 | |
After capsule re-entry | Sensitivity | 363.3 ± 9.0 | 810.2 ± 16.1 | 988.5 ± 10.3 | 469.5 ± 6.7 | 1279.4 ± 21.8 | 1276.7 ± 38.2 | 806.2 ± 30.1c |