Filter and line profiles for SN 1987A. The profiles of the HαF656N (dashed) and the [N II] F658N (solid) filters from the WFPC2 are shown with the filter profile of the HαF658N (dashed dot) from the ACS, and the Hα and the [N II] λλ 6548 6583 doublet from our SN1987A FORS1/VLT spectrum. The emission line fluxes have been normalized to fit them in the same plot with the throughput values of the three filters.
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