Table 1: Target selection parameters for the masks with long exposures in the 20 EDisCS fields.
Field $z_{\rm cl}^{\rm final}$ Run Mask numbers $z_{\rm phot,~low}$ $z_{\rm phot,~high}$ Explanation $z_{\rm cl}^{\rm P}$ $I_{1,{\rm bright}}$ $I_{1,{\rm faint}}$ Filters

Mid-z fields:

1018.8-1211 0.4734 3 05, 06, 07 0.27 0.67 $0.47\pm0.2$ 0.472 19.5 22 BVIK

1059.2-1253 0.4564 3 05, 06, 07 0.26 0.66 $0.46\pm0.2$ 0.457 19.6 22 BVIK

1119.3-1129 0.5500 4 09, 10, 11 0.35 0.75 $0.55\pm0.2$ 0.549 19.9 22 BVI

1202.7-1224 0.4240 4 09, 10, 11 0.22 0.62 $0.42\pm0.2$ 0.424 19.5 22 BVIK

2 02, 03, 04 0.28 0.68 $0.48\pm0.2$ 0.54 18.6 22 BVI[J]K

[0cm][0cm]1232.5-1250 [0cm][0cm]0.5414 3 05 0.34 0.74 $0.54\pm0.2$ 0.541 19.7 22 BVI[J]K

1238.5-1144 0.4602 4 09 0.26 0.66 $0.46\pm0.2$ 0.465 19.2 22 BVI

1301.7-1139 0.4828, 0.3969 4 09, 10, 11 0.20 0.68 0.40-0.2,0.48+0.2 0.485 19.2 22 BVIK

1353.0-1137 0.5882 4 09, 10, 11 0.39 0.79 $0.59\pm0.2$ 0.577 19.6 22 BVIK

1411.1-1148 0.5195 3 05, 06, 07 0.32 0.72 $0.52\pm0.2$ 0.520 19.4 22 BVIK

1420.3-1236 0.4962 4 09, 10, 11 0.30 0.70 $0.50\pm0.2$ 0.497 19.5 22 BVIK

High-z fields:

1037.9-1243 0.5783, 0.4252 3 05, 06, 07, 08 0.38 0.78 $0.58\pm0.2$ 0.58 20.0 23 VRIJK

2 02, 03, 04 0.5031 0.9031 $0.70\pm0.2$ 0.55 19.5 23 VRIJK

[0cm][0cm]1040.7-1155 [0cm][0cm]0.7043 3 05, 06 0.504 0.904 $0.70\pm0.2$ 0.704 20.6 23 VRIJK

2 02, 03, 04 0.494 0.894 $0.70\pm0.2$ 0.69 19.5 23 VRIJK

[0cm][0cm]1054.4-1146 [0cm][0cm]0.6972 3 05 0.50 0.90 $0.70\pm0.2$ 0.697 20.2 23 VRIJK

2 02, 03, 04 0.546 0.946 $0.75\pm0.2$ 0.75 19.5 23 VRI[J]K

[0cm][0cm]1054.7-1245 [0cm][0cm]0.7498 3 05 0.55 0.95 $0.75\pm0.2$ 0.748 20.4 23 VRI[J]K

1103.7-1245 0.9586, 0.6261, 0.7031 3; 4 05, 06; 09, 10 0.50 0.90 $0.70\pm0.2$ 0.704 20.2 23 VRIJK

1122.9-1136 ... ... ... ... ... ... ... ... ... ...

1138.2-1133 0.4796, 0.4548 3 05, 06, 07, 08 0.28 0.68 $0.48\pm0.2$ 0.480 19.7 23 VRIJK

2 02, 03, 04 0.597 0.997 $0.80\pm0.2$ 0.79 19.5 23 VRIJK

[0cm][0cm]1216.8-1201 [0cm][0cm]0.7943 3 05 0.60 1.00 $0.80\pm0.2$ 0.794 20.4 23 VRIJK

1227.9-1138 0.6357, 0.5826 3 05, 06, 07, 08 0.44 0.84 $0.64\pm0.2$ 0.64 20.4 23 VRIJK

1354.2-1230 0.7620, 0.5952 3 05, 06, 07, 08 0.40 0.96 0.60-0.2, 0.76+0.2 0.76 20.3 23 VRIJK

Notes - The 66 masks listed in this table are the masks with long exposures (with the exception of the listed 1238.5-1144 mask, cf. Sect. 2.3). Each field has between 1 and 5 such masks. The masks are numbered from 01 to 11 as described in Halliday et al. (2004). For reference the column $z_{\rm cl}^{\rm final}$ lists the spectroscopic cluster redshifts (Halliday et al. 2004 and this paper); these cluster redshifts were determined from all the obtained spectroscopy and were not as such part of the spectroscopic target selection. Where more than one redshift is listed the order is as follows: main cluster, secondary cluster ``a'', secondary cluster ``b'' (cf. Sect. 4.2). The ``Explanation'' column gives the same information as the $z_{\rm phot,~low}$ and $z_{\rm phot,~high}$ columns, except for a possible rounding to two decimals. The ``Filters'' column indicates what photometric data were employed to calculate the photometric redshifts used in the spectroscopic target selection. Filters in brackets indicate data not employed; these data were obtained later and used in subsequent studies, e.g. to calculate the final EDisCS photometric redshifts (Pelló et al., in prep.). No data are listed for the 1122.9-1136 field, since it only has an initial short mask, no long masks, cf. Sect. 2.3.

**Table 1:** Target selection parameters for the masks with long exposures in the 20 EDisCS fields.
Field	$z_{\rm cl}^{\rm final}$	Run	Mask numbers	$z_{\rm phot,~low}$	$z_{\rm phot,~high}$	Explanation	$z_{\rm cl}^{\rm P}$	$I_{1,{\rm bright}}$	$I_{1,{\rm faint}}$	Filters
Mid-z fields:
1018.8-1211	0.4734	3	05, 06, 07	0.27	0.67	$0.47\pm0.2$	0.472	19.5	22	BVIK
1059.2-1253	0.4564	3	05, 06, 07	0.26	0.66	$0.46\pm0.2$	0.457	19.6	22	BVIK
1119.3-1129	0.5500	4	09, 10, 11	0.35	0.75	$0.55\pm0.2$	0.549	19.9	22	BVI
1202.7-1224	0.4240	4	09, 10, 11	0.22	0.62	$0.42\pm0.2$	0.424	19.5	22	BVIK
		2	02, 03, 04	0.28	0.68	$0.48\pm0.2$	0.54	18.6	22	BVI[J]K
[0cm][0cm]1232.5-1250	[0cm][0cm]0.5414	3	05	0.34	0.74	$0.54\pm0.2$	0.541	19.7	22	BVI[J]K
1238.5-1144	0.4602	4	09	0.26	0.66	$0.46\pm0.2$	0.465	19.2	22	BVI
1301.7-1139	0.4828, 0.3969	4	09, 10, 11	0.20	0.68	0.40-0.2,0.48+0.2	0.485	19.2	22	BVIK
1353.0-1137	0.5882	4	09, 10, 11	0.39	0.79	$0.59\pm0.2$	0.577	19.6	22	BVIK
1411.1-1148	0.5195	3	05, 06, 07	0.32	0.72	$0.52\pm0.2$	0.520	19.4	22	BVIK
1420.3-1236	0.4962	4	09, 10, 11	0.30	0.70	$0.50\pm0.2$	0.497	19.5	22	BVIK
High-z fields:
1037.9-1243	0.5783, 0.4252	3	05, 06, 07, 08	0.38	0.78	$0.58\pm0.2$	0.58	20.0	23	VRIJK
		2	02, 03, 04	0.5031	0.9031	$0.70\pm0.2$	0.55	19.5	23	VRIJK
[0cm][0cm]1040.7-1155	[0cm][0cm]0.7043	3	05, 06	0.504	0.904	$0.70\pm0.2$	0.704	20.6	23	VRIJK
		2	02, 03, 04	0.494	0.894	$0.70\pm0.2$	0.69	19.5	23	VRIJK
[0cm][0cm]1054.4-1146	[0cm][0cm]0.6972	3	05	0.50	0.90	$0.70\pm0.2$	0.697	20.2	23	VRIJK
		2	02, 03, 04	0.546	0.946	$0.75\pm0.2$	0.75	19.5	23	VRI[J]K
[0cm][0cm]1054.7-1245	[0cm][0cm]0.7498	3	05	0.55	0.95	$0.75\pm0.2$	0.748	20.4	23	VRI[J]K
1103.7-1245	0.9586, 0.6261, 0.7031	3; 4	05, 06; 09, 10	0.50	0.90	$0.70\pm0.2$	0.704	20.2	23	VRIJK
1122.9-1136	...	...	...	...	...	...	...	...	...	...
1138.2-1133	0.4796, 0.4548	3	05, 06, 07, 08	0.28	0.68	$0.48\pm0.2$	0.480	19.7	23	VRIJK
		2	02, 03, 04	0.597	0.997	$0.80\pm0.2$	0.79	19.5	23	VRIJK
[0cm][0cm]1216.8-1201	[0cm][0cm]0.7943	3	05	0.60	1.00	$0.80\pm0.2$	0.794	20.4	23	VRIJK
1227.9-1138	0.6357, 0.5826	3	05, 06, 07, 08	0.44	0.84	$0.64\pm0.2$	0.64	20.4	23	VRIJK
1354.2-1230	0.7620, 0.5952	3	05, 06, 07, 08	0.40	0.96	0.60-0.2, 0.76+0.2	0.76	20.3	23	VRIJK

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