photometric offsets - Githubissues

joshspeagle / brutus

Modeling stellar photometry with "brute force" methods

MIT License

32 stars 5 forks source link

photometric offsets #8

Closed joshspeagle closed 5 years ago

joshspeagle commented 5 years ago

Add in ability to put in and solve for mean/median photometric offsets. This can then be integrated into the existing analysis pipeline and the results saved to disk. There should be two options:

an argument to pass photometric offsets, and
an argument to specify whether improvements should be solved for. Photometric offsets, like the other quantities derived "in-house", should be automatically dumped to disk under its own heading and re-applied later when relevant.

joshspeagle commented 5 years ago

Re-opening this because I should add in a simple plotting utility to plotting that can plot the photometric zero-point evolution as a function of various inputs. I should see if I can pattern this off of the 2-D plotting offset function in frankenz.

joshspeagle commented 5 years ago

Reopening this because I need to add in (properly) the ability to solve for these using importance reweighting. This will involve implementing a simple photometric likelihood function similar to loglike that will be called in photometric offsets.

I should probably also add in the ability to add in Gaussian priors, which can be user-specified, so that when we observe an offset of dx and variance dx_err we then get an updated value given the prior.