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Table A.1.

X-shooter log of observations.

UT date MJD start Exptime N. of exposures Slit width Readout
(s) (″)
UVB 2019-04-14 58587.008736778 420 45 1.0 1 × 1100k/1pt/hg
400 4
380 1
350 2
150 2
VIS 2019-04-14 58587.008796968 420 54 0.9 1 × 1100k/1pt/hg
NIR (†) 2019-04-14 58587.00883251 189 × 3 11 0.6 NonDest
180 × 3 43

UVB 2019-04-27 58600.003039113 400 56 1.0 1 × 1100k/1pt/hg
VIS 2019-04-27 58600.003099419 400 56 0.9 1 × 1100k/1pt/hg
NIR (†) 2019-04-27 58600.00313732 180 × 3 56 0.6 NonDest

Notes. (†)For the NIR spectrograph, the exposure time is given in DIT×NDIT in the image header, where DIT is the Detector Integration Time and NDIT is the number of averaged DITs. We also note that the readout mode is fixed in the NIR.

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