Fig. 5
Image of the spectrum of a standard star taken with the FORS2 300I instrument setup in the first chip (Q1). In red are shown the virtual slits of 30′′ length that F-VIPGI creates in the header of the scientific and calibration frames of the standard stars to mimic the VIMOS setting. In FORS2 observations the standard star spectra are always imaged in Q1 and are always enclosed in the first (#1) virtual slit.
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