Fig. 1
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Comparison of continuum-subtracted images obtained with different scale factors. From top to bottom and left to right, the scale factor increases (0.9, 1.0, 1.05, 1.1, 1.2, 1.3). Initially, poor continuum subtraction is evident, as the field stars appear as H2 line emitters (top panels). The final two bottom panels provide clear examples of over-subtraction of the continuum.
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