Make STIS Great Again!
Abstract
STIS is the premier high-resolution UV spectrograph in space, carrying out state-of-the-art investigations of a dizzying array of cosmic phenomena. While the instrument performance is superb, the CALSTIS pipeline wavelength scales can be improved in two significant ways: (1) collect new wavecal lamp exposures for echelle settings currently lacking adequate calibration coverage in the modern (post-SM4) era; and (2) build easy-to-apply corrections to compensate for small wavelength distortions introduced by the low-order polynomial dispersion model currently incorporated in the pipeline. In fact, success of the second improvement depends on availability of "missing" calibrations delivered by the first part. A modest expenditure of calibration time can enhance the extensive legacy of STIS, now and into the future.
- Publication:
-
HST Proposal
- Pub Date:
- June 2019
- Bibcode:
- 2019hst..prop15948A