Dear Andrea,
The vocab doc has 3 categories:
- phenomenon, process or feature
- object types
- instruments and methods.
I think we need another one maybe for conventions, or
else extend the def. of category 1 or 3??
Here from STC are some concepts that need I think to be
in the vocab. They are defined in STC, but they are concepts that
will exist more widely than STC and form a controlled vocab that
should probably be controlled by the Semantics and not the DM group...
- Timescales TT, UTC, TDB, LST, ..
- Reference frames FK5, LSR, CMB frame, GSE...
- Places in the universe that aren't objects:
Solar system barycenter
Observer topocenter
Local group center of mass
Center of Neptune (specifically, as opposed to Neptune in general)
- Coordinate systems:
galactic, equatorial, ecliptic, planetographic, planetocentric.
- Units !!!! Perhaps different from the VO Standard Vocab, but
I think the Semantics group is the right place to standardize
IVOA represenation of unit strings??
Jonathan
Received on 2006-05-18Z18:32:44