Table 1: VLT/UVES observation log.
UT Date $\beta $ Pic $^{{\rm a}}$ Grating $^{{\rm b}}$ Width $^{{\rm c}}$ Length $^{{\rm c}}$ Offset $^{{\rm d}}$ Orientation $^{{\rm d}}$ Exposures
2001-12-02 T 03:38 ON 437 0 $.\!\!^{\prime\prime}$4 10 $^{\prime \prime }$ -4 $.\!\!^{\prime\prime}$4 Parallel 69 $\times$ 15 s
2001-12-02 T 03:38 ON 860 0 $.\!\!^{\prime\prime}$3 12 $^{\prime \prime }$ -4 $.\!\!^{\prime\prime}$4 Parallel 47 $\times$ 25 s
2001-12-02 T 05:31 ON 390 0 $.\!\!^{\prime\prime}$4 8 $^{\prime \prime }$ -3 $.\!\!^{\prime\prime}$4 Parallel 62 $\times$ 20 s
2001-12-02 T 05:31 ON 580 0 $.\!\!^{\prime\prime}$3 12 $^{\prime \prime }$ -3 $.\!\!^{\prime\prime}$4 Parallel 48 $\times$ 25 s
2002-01-03 T 06:21 ON 390 0 $.\!\!^{\prime\prime}$4 8 $^{\prime \prime }$ -3 $.\!\!^{\prime\prime}$4 Parallel 62 $\times$ 20 s
2002-01-03 T 06:21 ON 580 0 $.\!\!^{\prime\prime}$3 12 $^{\prime \prime }$ -3 $.\!\!^{\prime\prime}$4 Parallel 48 $\times$ 25 s
2002-01-06 T 05:51 OFF 390 0 $.\!\!^{\prime\prime}$4 8 $^{\prime \prime }$ -3 $.\!\!^{\prime\prime}$0 Orthogonal 3 $\times$ 1205 s
2002-01-06 T 05:51 OFF 580 0 $.\!\!^{\prime\prime}$3 12 $^{\prime \prime }$ -3 $.\!\!^{\prime\prime}$0 Orthogonal 3 $\times$ 1195 s
2002-01-16 T 02:47 OFF 390 0 $.\!\!^{\prime\prime}$4 8 $^{\prime \prime }$ -11 $^{\prime \prime }$ Parallel 3 $\times$ 1205 s
2002-01-16 T 02:47 OFF 580 0 $.\!\!^{\prime\prime}$3 12 $^{\prime \prime }$ -11 $^{\prime \prime }$ Parallel 3 $\times$ 1195 s
2002-01-16 T 03:51 OFF 390 0 $.\!\!^{\prime\prime}$4 8 $^{\prime \prime }$ -6 $.\!\!^{\prime\prime}$0 Orthogonal 3 $\times$ 1205 s
2002-01-16 T 03:51 OFF 580 0 $.\!\!^{\prime\prime}$3 12 $^{\prime \prime }$ -6 $.\!\!^{\prime\prime}$0 Orthogonal 3 $\times$ 1195 s
2002-01-19 T 03:11 ON 390 0 $.\!\!^{\prime\prime}$4 8 $^{\prime \prime }$ 3 $.\!\!^{\prime\prime}$4 Parallel 62 $\times$ 20 s
2002-01-19 T 03:11 ON 580 0 $.\!\!^{\prime\prime}$3 12 $^{\prime \prime }$ 3 $.\!\!^{\prime\prime}$4 Parallel 48 $\times$ 25 s
2002-01-19 T 04:25 ON 390 0 $.\!\!^{\prime\prime}$4 8 $^{\prime \prime }$ 3 $.\!\!^{\prime\prime}$4 Parallel 62 $\times$ 20 s
2002-01-19 T 04:25 ON 580 0 $.\!\!^{\prime\prime}$3 12 $^{\prime \prime }$ 3 $.\!\!^{\prime\prime}$4 Parallel 48 $\times$ 25 s
2002-02-09 T 03:55 OFF 390 0 $.\!\!^{\prime\prime}$4 8 $^{\prime \prime }$ 3 $.\!\!^{\prime\prime}$0 Orthogonal 3 $\times$ 1205 s
2002-02-09 T 03:55 OFF 580 0 $.\!\!^{\prime\prime}$3 12 $^{\prime \prime }$ 3 $.\!\!^{\prime\prime}$0 Orthogonal 3 $\times$ 1195 s
2002-02-10 T 03:19 OFF 390 0 $.\!\!^{\prime\prime}$4 8 $^{\prime \prime }$ 11 $^{\prime \prime }$ Parallel 3 $\times$ 1205 s
2002-02-10 T 03:19 OFF 580 0 $.\!\!^{\prime\prime}$3 12 $^{\prime \prime }$ 11 $^{\prime \prime }$ Parallel 3 $\times$ 1195 s
2002-02-11 T 04:04 OFF 390 0 $.\!\!^{\prime\prime}$4 8 $^{\prime \prime }$ 6 $.\!\!^{\prime\prime}$0 Orthogonal 3 $\times$ 1205 s
2002-02-11 T 04:04 OFF 580 0 $.\!\!^{\prime\prime}$3 12 $^{\prime \prime }$ 6 $.\!\!^{\prime\prime}$0 Orthogonal 3 $\times$ 1195 s
2002-09-24 T 08:09 OFF 437 0 $.\!\!^{\prime\prime}$4 10 $^{\prime \prime }$ -3 $.\!\!^{\prime\prime}$0 Orthogonal 3 $\times$ 1205 s
2002-09-24 T 08:09 OFF 860 0 $.\!\!^{\prime\prime}$3 12 $^{\prime \prime }$ -3 $.\!\!^{\prime\prime}$0 Orthogonal 3 $\times$ 1195 s
$^{{\rm a}}$
ON means that the star was inside the spectroscopic slit, OFF that it was outside.
$^{{\rm b}}$
The gratings correspond to the following wavelength ranges: 326-445 nm for grating 390, 373-499 nm for grating 437, 476-684 nm for grating 580, and 660-1060 nm for grating 860.
$^{{\rm c}}$
Width and length refer to the dimensions of the slit.
$^{{\rm d}}$
Offset is the centre of the slit relative to $\beta $ Pic in the plane of the disk, where positive offsets are to the north-east. The orientation of the slit is relative to the disk plane.


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