Equivalent Width Measurement

Step 3.2 — Interactive continuum + line selection; EW with uncertainty, integrated flux
Upload a spectrum image, extract a 1-D profile, mark continuum and line regions, then measure.

Upload a spectrum image to begin.

Region Selection

Blue continuum Line region Red continuum

Mark three regions in order: blue continuum (left of line), line core, red continuum (right of line).

Blue continuum: not set
Line region: not set
Red continuum: not set