The High Resolution View

We obtained high resolution far-UV HST/STIS spectra in Mar 1998 and Jan 2001.

R=45,000 spectra, 1150-1700 Angstroms.
Time-tagged data; effective time resolution 5-10 seconds.
Observations sample both ingress and egress.

An example of a time resolved spectrum:

These data let us examine:

The run of temperature with height.

Hemispheric asymmetries.

spatial structures and velocity structures.

Chromospheric line structure.

The ISM on the line of sight.