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Table 1

Photometric observations at the GRB 130528A field at optical/nIR wavelengths.

Start time (UT) TT0 Telescope/ Filter Exposure time Magnitude
(mid exposure) (mid days) instrument grism (s) (AB)

May 28, 2013, 17:52:42.438 0.050 BOOTES-4/MET clear 120 >19.7 (3σ)
May 28, 2013, 17:54:46.385 0.052 BOOTES-4/MET Sloan r 180 >19.8 (3σ)
May 28, 2013, 17:57:50.198 0.054 BOOTES-4/MET clear 120 >19.7 (3σ)
May 29, 2013, 20:41:42.640 1.167 1.5 m OSN I 600 >23.0 (3σ)

Jun. 1, 2013, 03:04:50.211 3.409 10.4 m GTC Sloan i 100 × 9 22.87 ± 0.08
Jun. 1, 2013, 02:41:32.625 3.417 10.4 m GTC Sloan r 60 × 3 23.28 ± 0.01
Jun. 2, 2013, 02:56:40.228 4.427 10.4 m GTC Sloan i 100 × 1 22.74 ± 0.15
Dec. 23, 2013, 05:45:16.011 208.554 4.2 m WHT J 9 × 197 21.63 ± 0.35
Dec. 23, 2013, 06:59:02.247 208.610 4.2 m WHT K S 3 × 432 21.43 ± 0.25
Dec. 31, 2013, 21:57:12.000 217.219 6 m BTA B 300 × 8 23.41 ± 0.10
Apr. 05, 2014, 22:37:42.667 312.247 2.0 m LT Sloan z 300 × 36 22.41 ± 0.15

Notes. No correction for Galactic extinction is applied.

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