Fig. 3.
Identification map and spectra of KKH22. (a) Localisation of the slit on the KH22 globular cluster, (b) the raw spectrum in the area of the infrared calcium triplet without subtracting the sky background, (c) the result of subtracting the sky background by the nod-shuffle procedure, and (d) the cross-section 2D spectra along the slit after the sky subtraction.
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