Table 3: Setup of the spectroscopic observations.

Parameter		 Run 1 Run 2 Run 3 Run 4

Date		 Jan 19-21, 2002 May 16, 2002 Oct 08, 2002 Oct 31-Nov 01, 2002
Instrument TNG+DOLORES NTT+EMMI NTT+EMMI MMT+Blue Channel
Grating/Grism VPH #9 1435 ${\rm gr\;mm}^{-1}$ #6 1200 ${\rm gr\;mm}^{-1}$ #7 600 ${\rm gr\;mm}^{-1}$ 1200 ${\rm gr\;mm}^{-1}$
CCD $2048\times2048$ Loral #36 $2048\times2048$ Tek $2048\times4096$ MIT/LL #22 $3072\times1024$ Loral
Pixel size $15\times15$ ${\rm\mu m}^2$ $24\times24$ ${\rm\mu m}^2$ $15\times15$ ${\rm\mu m}^2$ $15\times15$ ${\rm\mu m}^2$
Scale ${\rm0\hbox{$.\!\!^{\prime\prime}$ }275\;pixel}^{-1}$ ${\rm0\hbox{$.\!\!^{\prime\prime}$ }32\;pixel}^{-1}$ ${\rm0\hbox{$.\!\!^{\prime\prime}$ }332\;pixel}^{-1}$ ${\rm0\hbox{$.\!\!^{\prime\prime}$ }30\;pixel}^{-1}$
Dispersion ${\rm0.34\;\AA\;pixel}^{-1}$ ${\rm0.32\;\AA\;pixel}^{-1}$ ${\rm0.83\;\AA\;pixel}^{-1}$ ${\rm0.49\;\AA\;pixel}^{-1}$
Slit width $1\hbox{$.\!\!^{\prime\prime}$ }0$ $1\hbox{$.\!\!^{\prime\prime}$ }0$ $1\hbox{$.\!\!^{\prime\prime}$ }0$ $1\hbox{$.\!\!^{\prime\prime}$ }5$
Wavelength range 6210-6870 Å 6400-7020 Å 5630-6970 Å 4455-5945 Å
Instrumental FWHM 1.63 Å 1.12 Å 2.34 Å 2.02 Å
Instrumental $\sigma^{ a}$ 32 ${\rm km\;s}^{-1}$ 22 ${\rm km\;s}^{-1}$ 45 ${\rm km\;s}^{-1}$ 53 ${\rm km\;s}^{-1}$
Seeing FWHM $1\hbox{$.\!\!^{\prime\prime}$ }5$- $2\hbox{$.\!\!^{\prime\prime}$ }0$ $1\hbox{$.\!\!^{\prime\prime}$ }8$ $1\hbox{$.\!\!^{\prime\prime}$ }3$ $1\hbox{$.\!\!^{\prime\prime}$ }8$- $2\hbox{$.\!\!^{\prime\prime}$ }2$
a At H$\alpha$ in Run 1-3, and at H$\beta$ in Run 4.


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