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Offsets between slitlets

To determine the offsets between the slitlets for Non-FORS data use

Midas ...> OFFSET/MOS

This command will take the calibration spectra of the different slitlets from \fbox{{\small \tt WLC}}.bdf and correlate them with the arc spectrum of the first slitlet. Thereby it will derive their offsets relative to the first slitlet (which will normally not be in the center of the CCD).

Petra Nass