Transmission spectroscopy of MASCARA-1b with ESPRESSO: Challenges of overlapping orbital and Doppler tracks

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Table 2

Observing log of MASCARA-lb transit observations.

Night	Date of observation	Telescope	Start (UT)	End (UT)	Airmass^(a) change	T_exp (s)	N_obs	S/N ^(b)
1	2019-07-13	VLT-UT3	02:56	09:46	2.13-1.23-2.02	150	111	106–175
2	2019-08-10	VLT-UT3	00:47	08:28	2.46-1.23-2.54	150	130	108–176

Notes.^(a) Airmass change during the observation. ^(b)Minimum and maximum S/N for each night, calculated in the Na I echelle order.

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