GALEX s/c orientation

I wrote some code to re-compute the GALEX spacecraft orientation given a first guess. My code just looks for the linear combination of attitude components that makes a chosen compact astronomical source compact on the celestial sphere. It seems to work on fake data; the plan for this week is to incorporate it into our code that plots the full photon time history of any GALEX source. Then it will permit that code to output probabilities (or odds), one for each photon, that the photon was generated by the smooth sky background as opposed to the chosen compact source, under assumptions about source variability and other things.