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Table 1.

Technical details of the instrumental configurations.

Spectrograph Obser. Time span Spectral coverage (Å) R Reciprocal dispersion (Å px−1) n
échelle-REOSC CAS 1994–2016 3600–6100 15 000 0.19 13
échelle LCO 2006–2017 3500–9850 40 000 0.05 20
FEROS ESO 2007–2015 3570–9210 46 000 0.03 7

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