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Table 1
Number of exposures as a function of exposure time and instrument.
| Exp. time [s] | P26 | PNA | ZDA |
|---|---|---|---|
| 30 | – | 123 | – |
| 60 | 241 | 296 | 58 |
| 90 | 6 | 4 | – |
| 120 | 64 | 216 | – |
| 180 | 197 | – | 6 |
| 210 | 11 | – | – |
| 240 | 29 | 1 | – |
| 300 | – | – | 34 |
| 360 | – | 1 | – |
| 540 | 64 | 1 | – |
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