Table 2: Observation log. $\langle{\rm d}t\rangle$ stands for mid-observation time after the burst. Magnitudes and flux densities are corrected for Galactic foreground extinction. ⁽¹⁾: All ISAAC $J_{\rm s}$ observations combined.
Date $\langle{\rm d}t\rangle$ Telescope/Instrument Filter Exposure Seeing Brightness log flux density

(Start UT) (days) (min) (mag) (erg/cm²/s/Å)

2003 May 29 04:58 0.6684 NTT-SofI J 15 0.8 $^{\prime \prime }$ 20.6 $\pm$ 0.3 -17.73 $\pm$ 0.12

2003 May 29 05:16 0.6809 NTT-SofI H 15 0.8 $^{\prime \prime }$ 20.3 $\pm$ 0.4 -18.05 $\pm$ 0.16

2003 May 29 05:32 0.6920 NTT-SofI $K_{\rm s}$ 15 0.8 $^{\prime \prime }$ 18.6 $\pm$ 0.2 -17.83 $\pm$ 0.08

2003 May 30 04:54 1.6673 NTT-SofI J 20 1.6 $^{\prime \prime }$ >20.2 <-17.57

2003 May 30 05:16 1.6826 NTT-SofI H 20 1.1 $^{\prime \prime }$ >19.9 <-17.89

2003 May 30 05:40 1.6993 NTT-SofI $K_{\rm s}$ 20 1.1 $^{\prime \prime }$ 18.9 $\pm$ 0.3 -17.95 $\pm$ 0.12

2003 Jun. 01 04:07 3.6486 NTT-SofI $K_{\rm s}$ 60 0.8 $^{\prime \prime }$ 19.6 $\pm$ 0.5 -18.23 $\pm$ 0.20

2003 Jun. 04 02:10 6.5604 Blanco-Mosaic2 I 40 1.2 $^{\prime \prime }$ 21.4 $\pm$ 0.3 -17.63 $\pm$ 0.12

2003 Jun. 12 08:55 14.8680 UKIRT-UFTI K 116 0.6 $^{\prime \prime }$ 19.6 $\pm$ 0.1 -18.23 $\pm$ 0.04

2003 Jun. 30 03:00 32.5951 Blanco-Mosaic2 I 40 1.1 $^{\prime \prime }$ 21.2 $\pm$ 0.3 -17.55 $\pm$ 0.12

2003 Sep. 17 00:12 111.4820 VLT-ISAAC $J_{\rm s}$ 50 0.6 $^{\prime \prime }$ 21.0 $\pm$ 0.2 -17.89 $\pm$ 0.08

2003 Sep. 27 00:27 121.4966 VLT-ISAAC $J_{\rm s}$ 60 0.9 $^{\prime \prime }$ 21.1 $\pm$ 0.3 -17.93 $\pm$ 0.12

2003 Sep. 29 23:38 124.4743 VLT-ISAAC J $_{\rm s}$ 94 0.7 $^{\prime \prime }$ 20.7 $\pm$ 0.1 -17.77 $\pm$ 0.04

2003 Oct. 01 00:04 125.4799 VLT-ISAAC $J_{\rm s}$ 60 0.6 $^{\prime \prime }$ 20.7 $\pm$ 0.2 -17.77 $\pm$ 0.08

2004 Jun. 15-18 382.5 D1m54-DFOSC R 75 1.4 $^{\prime \prime }$ 22.0 $\pm$ 0.2 -17.55 $\pm$ 0.08

2004 Jun. 18-19 384.5 D1m54-DFOSC V 135 1.5 $^{\prime \prime }$ 21.9 $\pm$ 0.2 -17.19 $\pm$ 0.08

2003 Sep. 17 - Oct. 01 ISAAC-combined⁽¹⁾ $J_{\rm s}$ 264 20.8 $\pm$ 0.1 -17.81 $\pm$ 0.04

**Table 2:** Observation log. $\langle{\rm d}t\rangle$ stands for mid-observation time after the burst. Magnitudes and flux densities are corrected for Galactic foreground extinction. ⁽¹⁾: All ISAAC $J_{\rm s}$ observations combined.
Date	$\langle{\rm d}t\rangle$	Telescope/Instrument	Filter	Exposure	Seeing	Brightness	log flux density
(Start UT)	(days)			(min)		(mag)	(erg/cm²/s/Å)
2003 May 29 04:58	0.6684	NTT-SofI	J	15	0.8 $^{\prime \prime }$	20.6 $\pm$ 0.3	-17.73 $\pm$ 0.12
2003 May 29 05:16	0.6809	NTT-SofI	H	15	0.8 $^{\prime \prime }$	20.3 $\pm$ 0.4	-18.05 $\pm$ 0.16
2003 May 29 05:32	0.6920	NTT-SofI	$K_{\rm s}$	15	0.8 $^{\prime \prime }$	18.6 $\pm$ 0.2	-17.83 $\pm$ 0.08
2003 May 30 04:54	1.6673	NTT-SofI	J	20	1.6 $^{\prime \prime }$	>20.2	<-17.57
2003 May 30 05:16	1.6826	NTT-SofI	H	20	1.1 $^{\prime \prime }$	>19.9	<-17.89
2003 May 30 05:40	1.6993	NTT-SofI	$K_{\rm s}$	20	1.1 $^{\prime \prime }$	18.9 $\pm$ 0.3	-17.95 $\pm$ 0.12
2003 Jun. 01 04:07	3.6486	NTT-SofI	$K_{\rm s}$	60	0.8 $^{\prime \prime }$	19.6 $\pm$ 0.5	-18.23 $\pm$ 0.20
2003 Jun. 04 02:10	6.5604	Blanco-Mosaic2	I	40	1.2 $^{\prime \prime }$	21.4 $\pm$ 0.3	-17.63 $\pm$ 0.12
2003 Jun. 12 08:55	14.8680	UKIRT-UFTI	K	116	0.6 $^{\prime \prime }$	19.6 $\pm$ 0.1	-18.23 $\pm$ 0.04
2003 Jun. 30 03:00	32.5951	Blanco-Mosaic2	I	40	1.1 $^{\prime \prime }$	21.2 $\pm$ 0.3	-17.55 $\pm$ 0.12
2003 Sep. 17 00:12	111.4820	VLT-ISAAC	$J_{\rm s}$	50	0.6 $^{\prime \prime }$	21.0 $\pm$ 0.2	-17.89 $\pm$ 0.08
2003 Sep. 27 00:27	121.4966	VLT-ISAAC	$J_{\rm s}$	60	0.9 $^{\prime \prime }$	21.1 $\pm$ 0.3	-17.93 $\pm$ 0.12
2003 Sep. 29 23:38	124.4743	VLT-ISAAC	J $_{\rm s}$	94	0.7 $^{\prime \prime }$	20.7 $\pm$ 0.1	-17.77 $\pm$ 0.04
2003 Oct. 01 00:04	125.4799	VLT-ISAAC	$J_{\rm s}$	60	0.6 $^{\prime \prime }$	20.7 $\pm$ 0.2	-17.77 $\pm$ 0.08
2004 Jun. 15-18	382.5	D1m54-DFOSC	R	75	1.4 $^{\prime \prime }$	22.0 $\pm$ 0.2	-17.55 $\pm$ 0.08
2004 Jun. 18-19	384.5	D1m54-DFOSC	V	135	1.5 $^{\prime \prime }$	21.9 $\pm$ 0.2	-17.19 $\pm$ 0.08
2003 Sep. 17 - Oct. 01		ISAAC-combined⁽¹⁾	$J_{\rm s}$	264		20.8 $\pm$ 0.1	-17.81 $\pm$ 0.04

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