meas_extensions_convolved is a plugin for the meas_base measurement framework. It convolves images before measuring aperture fluxes. The convolution provides a rough match to the PSF in other observations, and so aperture measurements on the convolved image are useful for:
- Measuring the flux that would be obtained with a fiber spectrograph, by using an aperture equal to the size of the spectrograph fiber and measuring with multiple target seeings to allow interpolation of the flux at the seeing of the spectroscopic observation.
- Measuring the color of galaxies in variable seeing, by using a common aperture and target seeing in each band.
This functionality is actively being used by the DRP team.
I propose to add this package as a dependency of lsst_distrib so that it can benefit from regular CI and so that it is distributed with future stack releases.
Looks like it's main contents are one file and its test. Should we just merge it with some other package?
I have no objection to merging it with something else, but I don't really understand the advantage. What are you hoping to gain?
If we are using it and need it and DRP team are supporting it I can't see any reason not to include it in lsst_distrib.
John Swinbank no expectation of gain, I'm just not clear on whether a small package like this should live by itself or be merged with something. I'm in favor of it coming in either way.
Personally, I'd love to see a lot fewer, bigger packages. But I think this (small) package is consistent with our existing conventions, and I'd rather pull it in to distrib without having to restructure it!
Let's do it. Work to be done on
Link to the package?