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Table 1
Secondary standards used for the GROND data.
| Filter | Star I | Star II | Star III | Star IV | Star V | Star VI | Star VII |
| 21 01 12.58 | 21 01 10.81 | 21 01 15.88 | 21 01 09.54 | 21 01 05.82 | 21 01 08.30 | 21 01 14.38 | |
| −51 05 17.2 | −51 04 54.6 | −51 06 17.4 | −51 06 22.2 | −51 05 21.5 | −51 05 53.6 | −51 05 25.8 | |
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| g ′ | 16.60 ± 0.05 | 16.28 ± 0.05 | 18.54 ± 0.05 | 20.14 ± 0.05 | 20.34 ± 0.06 | 20.38 ± 0.06 | 19.49 ± 0.05 |
| r ′ | 15.56 ± 0.04 | 15.64 ± 0.04 | 18.09 ± 0.04 | 18.58 ± 0.04 | 19.44 ± 0.05 | 19.70 ± 0.04 | 19.15 ± 0.04 |
| i ′ | 15.29 ± 0.04 | 15.48 ± 0.04 | 18.00 ± 0.04 | 17.33 ± 0.04 | 19.18 ± 0.04 | 19.55 ± 0.05 | 19.10 ± 0.04 |
| z ′ | 15.05 ± 0.04 | 15.31 ± 0.04 | 17.93 ± 0.04 | 16.69 ± 0.04 | 18.90 ± 0.04 | 19.39 ± 0.04 | 19.00 ± 0.04 |
| J | 14.91 ± 0.05 | 15.34 ± 0.05 | 18.02 ± 0.05 | 16.23 ± 0.05 | 18.83 ± 0.05 | 19.42 ± 0.05 | 19.13 ± 0.05 |
| H | 14.76 ± 0.06 | 15.31 ± 0.06 | 18.14 ± 0.07 | 16.04 ± 0.06 | 18.65 ± 0.08 | 19.42± 0.09 | 19.29 ± 0.08 |
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| Filter | Star 1 = I | Star 2 | Star 3 | Star 4 = IV | Star 5 | Star 6 | |
| 21 01 12.58 | 21 01 34.92 | 21 01 03.38 | 21 01 09.53 | 21 01 01.58 | 21 01 10.74 | ||
| −51 05 17.2 | −51 05 59.3 | −51 03 26.6 | −51 06 22.5 | −51 07 43.8 | −51 05 30.2 | ||
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| K | 15.12 ± 0.07 | 12.93 ± 0.07 | 14.72 ± 0.07 | 16.28 ± 0.09 | 13.57 ± 0.07 | 16.26 ± 0.08 | |
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