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Table 1
MIDI observations of FG Sge and the calibrator: time of observation (coordinated universal time=UTC), projected baseline length Bp, position angle of the projected baseline on the sky (P.A.), seeing in the visible, and the airmass at the times of the observations of FG Sge and the calibrator.
| # | Object | tobs (UTC) | Bp (m) | PA (°) | Seeing (″) | Airmass |
|---|---|---|---|---|---|---|
| 2008 June 22 (MJD2454639) | ||||||
| CAL1 | HD 168723 | 07:27:42 | 46.0 | 46 | 1.0 | 1.35 |
| SCI1 | FG Sge | 07:46:02 | 43.0 | 50 | 1.0 | 1.47 |
| CAL2 | HD 168723 | 08:36:15 | 43.3 | 43 | 1.0 | 1.84 |
| SCI2 | FG Sge | 08:57:21 | 45.9 | 47 | 1.0 | 1.74 |
| SCI3 | FG Sge | 09:06:47 | 46.1 | 46 | 1.1 | 1.82 |
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