4 papers
Status of the STIS Auto-wavecal Exposures
D. Welty, S. Lockwood
We discuss the behavior of the default ``wavecal'' spectra obtained together with most STIS spectroscopic exposures, which are needed for proper wavelength calibration of the scien…
Uncertainties in Low-Count STIS Spectra
Joshua D. Lothringer, Leonardo dos Santos, Joleen Carlberg +2
We evaluate uncertainty calculations in the calstis pipeline for data in the low-count regime. Due to the low dark rate and read-noise free nature of MAMA detectors, observations o…
STIS Cycle 30 Calibration Programs
D. Welty, R. Bohlin, J. Carlberg +8
We discuss the suite of STIS calibration programs executed during HST Cycle 30, covering the period 2022 Nov 07 through 2023 Nov 05. For each of the 19 current regular calibration…
Time-resolved Hubble Space Telescope UV observations of an X-ray quasi-periodic eruption source
Thomas Wevers, Muryel Guolo, Sean Lockwood +3
X-ray quasi-periodic eruptions (QPEs) are a novel mode of variability in nearby galactic nuclei whose origin remains unknown. Their multi-wavelength properties are poorly constrain…