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Table 1
Observational parameters.
| Spectral line | Fe I 557.66 nm |
| Date of observations | 2007-June-30 |
| Telescope | VTT at Izaña, Tenerife |
| Start of first scan | UT 8:05 |
| End of last scan | UT 8:46 |
| Location at Sun | disk center |
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|
|
| Spectrograph: | |
| TESOS (*) | high resolution mode |
| FPI bandwidth | 1.9 pm |
| FPI scanning step width | 0.83 pm |
| number of steps per scan | 101 |
| scan range | 83 pm |
| exposure time | 50 ms |
| scan duration (1 profile) | ≈20 s |
| scanning cadence | 25 s |
| number of scans | 100 |
Notes. (*) Triple Etalon Solar Spectrometer, Tritschler et al. (2002).
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