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Table 1

Observations used in the discovery and confirmation of MASCARA-4 b/bRing-1 b.

Instrument Observatory Date Nobs texp [s] Filter/spectral range
MASCARA-S La Silla 01-10-2017–31-12-2018 15 879 320 None
bRing-SA SAAO 01-07-2017–31-12-2018 19 672 320 None
bRing-AU SSO 01-11-2017–31-12-2018 16 745 320 None
FIDEOS La Silla 24-05-2018–27-05-2018 14 900 400–700 nm
FIDEOS La Silla 06-11-2018–21-11-2018 13 900 400–700 nm
CHAT Las Campanas 31-10-2018 271 4 700–810 nm
CHIRON CTIO 25-01-2019 66 240 460–875 nm

Notes. Listed datesare in the format dd-mm-yyyy.

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