As you can see, many of the regions were truncated on the edge of their
maps, with some worse than others.  Substantial diffuse emission was
obtained.  SH maps are even more affected, which makes using them with
LH problematic.  It may be worth considering "touching up" a few of
these.

<pre><img SRC=n2403.jpg><img SRC=NGC2403_Extranuc_SL1.png></pre>