Commits on Aug 1, 2024

1. refactor(ephemeris): Use ch_ephem …

   This re-imports stuff moved to `ch_ephem`.  It both
   re-imports everything that was moved back into `ch_util.ephemeris` for
   backwards compatibility, but also removes references to
   `ch_util.epheremis` from the code, using the newly-exported versions
   of things directly.
   
   This PR requires both:
   
   * radiocosmology/caput#271
   * chime-experiment/ch_ephem#1
   
   Catalogs:
   
   All the catalogs have been moved to `ch_ephem`, which provides a
   standard interface to them via `ch_ephem.catalogs.load`.  To make this
   change, `fluxcat.FluxCatalog.load` has been broken into two pieces.  The
   new `fluxcat.FluxCatalog.load_dict` imports a catalog from an
   already-parsed JSON dict (which is what `ch_ephem` provides).  The
   original `fluxcat.FluxCatalog.load` works as it used to, but tail-calls
   `load_dict` to do most of the importing.
   
   Position data:
   
   Position data (lat, lon, alt) is now obtained by fetching the parameter
   out of the `caput.time.Observer` objects provided by `ch_ephem`.  The
   constants in `ch_util.ephemeris` are populated by doing this.
   
   Instrument geormetry:
   
   `ch_ephem` has also taken on the geometry data (rotation, roll, offset)
   that was in `tools` (where it's been re-imported from `ch_ephem`).
   
   Private objects deleted:
   
   I've also deleted a number of private objects which are no longer
   being used (i.e. objects whose names start with a leading underscore).
   
   Notable among these are the geometry constants from `ch_util.tools`
   and the unused`ch_util.tools._LAT_LON` which had position data for
   various instruments which differed from the position data provided
   by `ch_util.ephemeris`.
   
   Also removed are the long-deprectated `ch_util.ephemeris._get_chime` and
   `ch_util.ephemeris.transit_RA`.

   

   ketiltrout committed Aug 1, 2024
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