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Table 1

List of ERIS data.

Epoch ID NDIT DIT [s] PS [mas] S/N FWHMx [mas] FWHMy [mas] Seeing [mas]
2023.279 111.24H0.002 3 600 12.5 5.4 62.37±2.25 61.25±2.12 0.5-0.6
2023.435 111.24H0.003 3 600 12.5 3.7 66.27±1.40 68.75±1.43 0.3-0.7
2024.221 0112.B-2117(A) 3 600 12.5 4.3 80.12±5.37 74.00±4.25 0.5-0.8
2024.224 0113.B-0111(A) 3 600 12.5 4.1 66.75±1.87 67.00±1.95 0.3-1.0
2023.443 111.24H0.003 14 30 100 5.8 107.10±4.45 82.26±4.71 0.3-0.7
2023.443 111.24H0.003 7 10 250 6.1 333.86±6.81 267.33±5.56 0.3-0.7

Notes. We measured the Doppler-shifted Brγ line of G2/DSO against the continuum emission to derive the S/N for the data with a spatial plate scale of 12.5 mas. For the data with a spatial plate scale of 100 and 250 mas, we used the bow-shock source X3 because of crowding effects in the dense S cluster. Hence, the indicated quantities describe a signal-to-continuum ratio and are a lower limit to describe the data quality. We refer to Appendix C, where we outline the spectral analysis we used to derive the S/N. Furthermore, the FWHM of S2 indicates a qualitative parameter to compare the 12.5 mas data quality. For the 100 mas and 250 mas data, we list the FWHM of IRS 16NW and IRS 1W, respectively. The listed seeing in arcseconds was taken from www.eso.org and indicates the DIMM-Seeing-at-start-time.

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