Gallery example on loop resolution

[wtbarnes]

Because of the way synthesizAR models the loops as collections of 1D segments, there is always a question about what the "right" resolution to use is. In general, this resolution should be at least 2 times that of the instrument resolution in question. Higher resolution does not impact the resulting emission because the weighting is proportional to the size of the loop segment. There should be a gallery example that shows 1) the effect of underresolving a loop, e.g. a patchy image 2) how to automatically calculate the correct resolution and 3) that the total intensity within a given pixel does not change appreciably as a function of increasing resolution.