It's clear we're missing a lot of standard, useful columns (many of them already enumerated in the ObservationInfo class) in the exposure, visit, and detector tables. We should try harder to get this list complete before we declare the Registry schema stable to reduce the number of migrations we have to do afterwards.
- Target name (for ObsCore)
- RA/Dec/rotation angle/rotation coord (so that we can calculate visits without reading the raw data file)
Also includes changes to obs_base to use the ra/dec in visit region calculation.