1 J1888.16 cluster, z=0.563
 2 A122, z=0.11278
 3 Abell S154
 4 APMBGC 244-064-098, z=0.08764
 5 A227, z=0.17625
 6 A3038
 7 Abell S346, z=0.067
 8 A3259
 9 A744, z=0.0756
10 2' of PDCS 040
11 A899
12 J101016.1+543006 group, z=0.045
13 z=0.340 cluster (Schmidt et al., 1998A&A...329..495S)
14 UGC 06057 group, z=0.0382
15 MS 1157.3+5548, z=0.081
16 MS 1201.5+2824, z=0.167
17 MS 1208.7+3928, z=0.340
18 MS 1308.8+3244, z=0.245
19 MKW 11, z=0.02314
20 z=0.308 cluster (McHardy et al., 1998MNRAS.295..641M)
21 z=0.382 cluster (McHardy et al., 1998MNRAS.295..641M)
22 RX J13406+4018 group, z=0.171
23 A1774, z=0.1691
24 A1775, z=0.0696
25 Probably part of A1877, z=0.2493
26 Image saturated by a nearby star
27 A1969, z=0.29809
28 Distant cluster behind the nearby group
29 MCG +04-39-010 group
30 A2220, z=0.1106
31 TTR95 1646+82 cluster
32 QSO 1640+400, z=1.59
33 A2246, z=0.225
34 Abell S840, z=0.0152
35 UGC 11780 group
36 Part of A2465, z from Jones et al. (1995, in Proc. Roentgenstrahlung from 
36 the Universe, MPE Report 263, 591)
37 Part of A2465, z from Jones et al. (1995, in Proc. Roentgenstrahlung from 
37 the Universe, MPE Report 263, 591)
38 Zw2255.5+2041, z=0.288
39 A4043