... FORS1

Based on observations made with ESO Telescopes at the Paranal Observatory under programme ID 068.D-0403, 070.D-0352, 272.D-5026, 073.D-0498, and 074.D-0488.

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...

Appendix is only available in electronic form at http://www.edpsciences.org

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... spectrum

The high order of the fitting function is justified by the high SNR that makes it possible to trace very accurately the spectrum across the CCD.

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