Add Boresight or Corotator Position to ObsDb

[Katie Harrington]

We're going to want to be able to query / group by boresight position for the SAT, that's going to be one of the major data splits. We probably also want to track LAT Corotator position as well.

[Alexandre Adler]

We have some of those in update_obsdb: there are roll_center and roll_throw keywords for observations, computed from boresight_enc (SAT) or el_enc and corotator_enc (LAT) See lines 253-263.
Do you want another keyword specifically for the corotator angle?

[Katie Harrington]

Hmm ok. I'm not seeing those in the database for satp1

[Alexandre Adler]

Solved by re-generating one of the obsdb lines.