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Table 1:

Regions observed with VIMOS.

Cluster 		Observing period RA(J2000) Dec(J2000) Distance $A_{\rm V}$ Sources
    [hh:mm:ss] [dd:mm:ss] [pc] [mag] [N]
$\sigma$ Orionis Oct. 2006-Mar. 2007 05:38:00 -02:37:00 360 0.15 216
NGC 6231 Apr. 2008-Sep. 2008 16:54:10 -41:49:30 1240 1.36 573
NGC 6531 Apr. 2008-Sep. 2008 18:04:13 -22:29:24 1210 0.87 627
ASCC 58 Oct. 2006-Mar. 2007 10:15:07 -54:58:12 600 0.28 370
NGC 2353 Oct. 2006-Mar. 2007 07:14:30 -10:16:00 1120 0.22 316
Collinder 65 Oct. 2006-Mar. 2007 05:26:05 +15:41:59 310 0.40 198
NGC 6664 Apr. 2008-Sep. 2008 18:36:42 -08:13:00 1440 2.20 508

Notes. The surveyed area for each cluster is 16$^\prime$ $\times$ 18$^\prime$ centered at the coordinates listed above. The limiting magnitude is V = 21 mag. MOS observations were carried out with the ``HR-Orange'' grism (maximum spectral coverage: 5200-7600 Å; $\lambda / \Delta\lambda$ = 2150) and a slit width of 1 $\hbox{$^{\prime\prime}$ }$.


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