Fig. 1
Effective transmission of the VYSOS6 filters convolved with the quantum efficiency of the ALTA U16M CCD camera (top). The position of the narrow-band [SII] 6721 Å filter (red line) and the simulated redshifted Gaussian-shaped Hα emission line using the parameters obtained by Dietrich et al. (2005) (black line) are shown in the bottom panel.
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