Open Access

Table 1

Logs of the GTC observations.

Name ID Short name Gaia G (mag) Grism Resolution (Å) Date Seeing (arcsec) Exposure (s)
WD1 0552+3237 19.154 R2000B 3.0 20220921 0.8 4 × 750
R2500R 3.6 20220923 0.8 4 × 750
WD2 0552+3236 20.137 R1000B 9.0 20221003 1.1 2 × 1400
WD3 0552+3231 19.769 R1000B 9.0 20220929 1.1 2 × 1400
WD4 0551+3216 20.560 R1000B 9.0 20221016 0.7 4 × 1000
WD5 0553+3229 20.660 R1000B 9.0 20220929 1.2 2 × 1000
20221017 1.0 2 × 1000
WD6 0547+3246 19.917 R1000B 9.0 20221003 0.7 2 × 1400
WD7 0548+3323 20.599 R1000B 9.0 20220929 1.3 2 × 1000
20221016 0.8 2 × 1000

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