I'll start looking at the code shortly. In the meantime, Nate Lust, could you please explain the plot above? It's nice and colourful, but it's not obvious that it demonstrates these plugins do the correct thing. Have you checked that you get the same (or very similar) numbers running the same data through the equivalent code on HSC?

Review comments on GitHub. Quite a few relatively minor improvements; the most notable is that the Jacobian plugin needs some proper documentation explaining what it actually does.

I agree that the pretty coloured plot is not implausible, but I'd still like you to expand on exactly how it demonstrates that these plugins are working – have you checked that the change in the output of the Jacobian plugin over the focal plane matches what you physically expect and have measured in the HSC stack?

The plot above demonstrates that the focal plan plugin is able to calculate focal plan coordinates, as shown by the round shape, and the division for each CCD. The value of the Jacobian is what you would expect for a Jacobian calculated across the focal plane using the center as the point of approximation. That is to say the Jacobian should be close to one near the center, and decrease toward the edges and the approximation becomes a bit poorer. Additionally I have checked the values of the catalog against those generated with the HSC stack over the same dataIds, and they are very close to each other, differing only at the magnitude expected due to differences in the pipeline.

merged to master

Release notes updated.