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Table A.1.

Log of SN 2018bsz spectral observations.

Civilian date (UT) MJD Epoch a Telescope Instrument Wavelength range (Å) Grism/Grating
2018-05-20 58258.5 –9 FTN FLOYDS 3200–10 000 235 l/mm
2018-05-21 58259.2 –8 NTT EFOSC2 3700–9300 Gr13
2018-05-23 58261.3 –6 NTT EFOSC2 3400–7500 Gr11
2018-05-23 58261.3 –6 NTT EFOSC2 6000–10 000 Gr16
2018-05-23 58261.6 –6 FTS FLOYD 3200–10 000 235 l/mm
2018-06-01 58270.0 +3 LT SPRAT 4000–8000 Wasatch600
2018-06-01 58270.3 +3 VLT X-Shooter 3500–25 000 UVB+VIS+NIR
2018-06-01 58270.6 +3 FTS FLOYDS 3200–10 000 235 l/mm
2018-06-05 58274.0 +7 Magellan IMACS 4200–9400 300 l/mm blue
2018-06-05 58274.3 +7 Magellan FIRE 8800–20 000 LDPrism
2018-06-05 58274.4 +7 FTN FLOYDS 3200–10 000 235 l/mm
2018-06-06 58275.0 +8 LT SPRAT 4000–8000 Wasatch600
2018-06-08 58277.0 +10 Gemini-South FLAMINGOS-2 9900–18 000 JH grism

Notes.

(a)

With respect to the r-band maximum of MJD = 58267.5.

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