Table 1
Log of the spectroscopic observations of Vega.
| Date | BJDfirst | BJDlast | N spec | texp (s) | tcov (h) | S/N |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) |
|
|
||||||
| Aug. 2 2012 | 6142.3308 | 6142.6238 | 425 | 17−30 | 7.0 | 884 ± 202 |
| Aug. 3 2012 | 6143.3528 | 6143.6436 | 629 | 10−15 | 7.0 | 925 ± 145 |
| Aug. 4 2012 | 6144.3412 | 6144.6423 | 628 | 10−17 | 7.2 | 850 ± 121 |
| Aug. 5 2012 | 6145.3788 | 6145.6442 | 402 | 13−17 | 6.4 | 766 ± 103 |
| Aug. 6 2012 | 6146.3444 | 6146.6423 | 504 | 17−25 | 7.1 | 808 ± 115 |
Notes. (1) Date of the observation (UT). (2) and (3) Barycentric Julian date (mean observation, 2 450 000+) of the first and the last stellar spectrum of the night, respectively; (4) number of high-resolution Vega spectra obtained; (5) exposure time (s); (6) total hours covered on the sky; (7) nightly average and standard deviation of S/N per resolved element at 520 nm.
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