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Table 1

Log of the GTC observations.

Date Instrument Configuration #exp. [exp. time (s)] Seeing (′′) Res. scatter (%)
2019-10-21 (a) OSIRIS Sloan g, frame transfer 419[10] 1.0–3.0 0.6
2020-03-02 OSIRIS Sloan i, frame transfer 600[5] 1.5 0.4
2020-05-03 (b) OSIRIS R1000R, 0.8′′ and 2.5′′ slits 2[530]+13[84] 1.6–4.0 2.5
2020-05-10 (c) OSIRIS R1000B, 2.5′′ slit 31[75] 0.8 0.3
2020-05-20 OSIRIS R1000B, 2.5′′ slit 43[75] 0.9 0.15
2020-06-13 EMIR J filter, STARE, sky bef. and aft. 45[10]+120[10]+60[10] 0.7 0.9

Notes. (a) Data from V20. (b) Bad weather conditions. (c)Target spectra close to a bad column.

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