I haven't posted in a while, but here's a quick update.
Today I discovered:
1. The calibration stars are fine. I wasn't comparing the same area of observations before.
2. There's still a problem in the zero point that can't be located.
3. Is it a problem with the star injection?
1. Finish the distance code by adding the uncertainty bootstrap to the end a la Walsh et al. 2008.
2. Code up the surface brightness calculation from the ML results a la Maya's handy guide.