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Table 3
Allan stability times (tA in seconds) of the HIFI instrument measured for different noise resolutions and reference bandwidths.
| tA | Continuum stability | Spectroscopic stability | |||||||
| [s] | Full backend | Full backend | 1 GHz bandwidth | ||||||
| band | native1 | 1 km s-1 | 5 km s-1 | native1 | 1 km s-1 | 5 km s-1 | native1 | 1 km s-1 | 5 km s-1 |
|
|
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| 1a | 6.5 | 3.5 | 0.8 | 64.0 | 42.0 | 16.0 | 170 | 120 | 55.0 |
| 1b | 6.5 | 3.6 | 0.8 | 46.0 | 30.0 | 10.0 | 150 | 99 | 37.0 |
| 2a | 14.0 | 8.7 | 2.2 | 71.0 | 48.0 | 16.0 | 300 | 220 | 93.0 |
| 2b | 7.1 | 3.6 | 1.0 | 35.0 | 19.0 | 6.2 | 160 | 88 | 29.0 |
| 3a | 3.4 | 2.1 | 0.7 | 25.0 | 14.0 | 4.8 | 65 | 40 | 15.0 |
| 3b | 6.5 | 5.0 | 1.5 | 65.0 | 50.0 | 15.0 | 250 | 200 | 72.0 |
| 4a | 1.8 | 1.4 | 0.5 | 9.1 | 7.3 | 2.6 | 120 | 98 | 38.0 |
| 4b | 7.8 | 3.1 | 0.6 | 59.0 | 26.0 | 6.5 | 240 | 120 | 36.0 |
| 5a | 13.0 | 4.4 | 0.9 | 110.0 | 45.0 | 13.0 | 310 | 160 | 60.0 |
| 5b | 12.0 | 4.3 | 0.9 | 82.0 | 39.0 | 13.0 | 210 | 120 | 55.0 |
| 6a | 1.3 | 0.6 | 0.2 | 11.0 | 4.9 | 1.7 | 32 | 15 | 5.4 |
| 6b | 2.8 | 0.8 | 0.2 | 42.0 | 15.0 | 4.4 | 91 | 43 | 17.0 |
| 7a | 1.5 | 0.4 | 0.1 | 27.0 | 8.9 | 2.5 | 69 | 25 | 8.1 |
| 7b | 0.3 | 0.1 | 0.0 | 12.0 | 3.8 | 1.1 | 33 | 10 | 3.0 |
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