Table 3: Stars used for the flux calibration of the imaging data for C 1 (Fig. 2). I-band magnitudes are from field photometry provided by Henden (2003) and J, H and $K_{\rm s}$ -band magnitudes are taken from the 2MASS All-Sky Point Source Catalog. ⁽¹⁾: no I-band magnitudes available, ⁽²⁾: no uncertainties provided by 2MASS.
Star RA (J2000) Dec (J2000) I J H $K_{\rm s}$

hh:mm:ss dd:mm:ss [mag] [mag] [mag] [mag]

A 17:03:58.6 -22:37:33 ⁽¹⁾ 14.97 $\pm$ 0.03 14.26 $\pm$ 0.05 14.04 $\pm$ 0.05

B 17:03:59.3 -22:37:18 14.60 $\pm$ 0.02 13.37 $\pm$ 0.02 12.64 $\pm$ 0.03 12.46 $\pm$ 0.02

C 17:04:00.3 -22:37:06 16.33 $\pm$ 0.10 15.50 $\pm$ 0.07 14.87 $\pm$ 0.08 14.76 $\pm$ 0.11

D 17:04:02.5 -22:37:10 ⁽¹⁾ 16.09 $\pm$ 0.11 15.58 $\pm$ 0.11 15.48 $\pm$ 0.21

E 17:04:02.9 -22:37:37 ⁽¹⁾ 16.57 $\pm$ 0.13 16.15 $\pm$ 0.17 15.76⁽²⁾

F 17:04:02.4 -22:37:37 ⁽¹⁾ 15.96 $\pm$ 0.08 15.48 $\pm$ 0.10 15.20 $\pm$ 0.18

G 17:04:00.4 -22:36:58 17.44 $\pm$ 0.20 16.43 $\pm$ 0.11 15.88 $\pm$ 0.12 15.38⁽²⁾

**Table 3:** Stars used for the flux calibration of the imaging data for C 1 (Fig. 2). I-band magnitudes are from field photometry provided by Henden (2003) and J, H and $K_{\rm s}$ -band magnitudes are taken from the 2MASS All-Sky Point Source Catalog. ⁽¹⁾: no I-band magnitudes available, ⁽²⁾: no uncertainties provided by 2MASS.
Star	RA (J2000)	Dec (J2000)	I	J	H	$K_{\rm s}$
	hh:mm:ss	dd:mm:ss	[mag]	[mag]	[mag]	[mag]
A	17:03:58.6	-22:37:33	⁽¹⁾	14.97 $\pm$ 0.03	14.26 $\pm$ 0.05	14.04 $\pm$ 0.05
B	17:03:59.3	-22:37:18	14.60 $\pm$ 0.02	13.37 $\pm$ 0.02	12.64 $\pm$ 0.03	12.46 $\pm$ 0.02
C	17:04:00.3	-22:37:06	16.33 $\pm$ 0.10	15.50 $\pm$ 0.07	14.87 $\pm$ 0.08	14.76 $\pm$ 0.11
D	17:04:02.5	-22:37:10	⁽¹⁾	16.09 $\pm$ 0.11	15.58 $\pm$ 0.11	15.48 $\pm$ 0.21
E	17:04:02.9	-22:37:37	⁽¹⁾	16.57 $\pm$ 0.13	16.15 $\pm$ 0.17	15.76⁽²⁾
F	17:04:02.4	-22:37:37	⁽¹⁾	15.96 $\pm$ 0.08	15.48 $\pm$ 0.10	15.20 $\pm$ 0.18
G	17:04:00.4	-22:36:58	17.44 $\pm$ 0.20	16.43 $\pm$ 0.11	15.88 $\pm$ 0.12	15.38⁽²⁾

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