Thanks Nick

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#580305
George Carey
Participant

I have the centroid at radius 3. 

These are values I get when I change the radius:

centroid magn.
radius
1 18.0
2 16.9
3 16.5
4 16.5
5 16.4
6 16.3
7 16.2
8 16.2

At radius 3 it looks like all of the nova is in the circle.

I am never sure what is best.