Table 1: Log of imaging observations with FORS1. The 5 $\sigma$ detection limit was measured in a circular aperture of $3\hbox {$^{\prime \prime }$ }$ diameter and is given in the AB system.
filter total exp. combined seeing 5 $\sigma$ detection

time (hr) ( $\hbox{$^{\prime\prime}$ }$ ) limit

BRI 1346-0322

narrow 8.9 0.93 26.0

B 2.5 1.02 26.5

R 1.7 0.94 26.2

Q 2138-4427

narrow 10.0 0.96 26.5

B 2.5 1.04 26.9

R 1.7 0.93 26.5

**Table 1:** Log of imaging observations with FORS1. The 5 $\sigma$ detection limit was measured in a circular aperture of $3\hbox {$^{\prime \prime }$ }$ diameter and is given in the AB system.
filter	total exp.	combined seeing	5 $\sigma$ detection
	time (hr)	( $\hbox{$^{\prime\prime}$ }$ )	limit
BRI 1346-0322
narrow	8.9	0.93	26.0
B	2.5	1.02	26.5
R	1.7	0.94	26.2
Q 2138-4427
narrow	10.0	0.96	26.5
B	2.5	1.04	26.9
R	1.7	0.93	26.5

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