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Table 1.

Observational information for ZTF J0112+5827.

Date Instrument Specifications
2018–2024 ZTF g-band (4087−5522 Å): 798 exposures
r-band (5600−7316 Å): 1949 exposures
i-band (6883−9009 Å): 42 exposures
1990–1991 ROSAT 0.1−2.4 keV X-ray band
388.50 s exposure
29–30 Oct. 2022 P200/DBSP Blue: 3400−5600 Å, 1.5 Å resolution, 300 s exp.
Red: 5650−10200 Å, 1.1 Å resolution, 300 s exp.
Total of 180+ spectra obtained across 11+ orbital periods
14 Sep. 2024 GTC/OSIRIS Grism R1000B, 3630−7880 Å,
4 × 480 s exposures

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