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Table 3
Current inflight calibration plan.
| Purpose | Frequency (/year) | Measurement |
|
|
||
| λ calibration | 1 | coronal source: Capella |
| Effective area | 2 | continuum source: Mrk 421, PKS 2155-3041 |
| 1 | Vela supernova remnant | |
| 1 | RX J1856–3754 | |
| CCD response (gain/CTI) | 0.5 | Mrk 421 on and off axis (CTI)1 |
| 1 | Capella (gain) | |
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