Late Breaking News
About STIS
The Space Telescope Imaging Spectrograph (STIS) was installed on the Hubble Space Telescope (HST) during the second servicing mission (SM2) in 1997. STIS is a versatile imaging spectrograph, providing spatially resolved spectroscopy from 1150 to 10300 Å at low to medium spectral resolution, high spatial resolution echelle spectroscopy in the UV, solar-blind imaging in the UV, time-tagging of photons for high time resolution in the UV, and direct and coronagraphic imaging in the optical.
STIS operated on Side-1 electronics until 2001, when it experienced an electronic failure. It then switched to the redundant set of electronics, Side-2, where it operated as normal until 2004, when a power supply on Side-2 failed. STIS remained inoperable until it was repaired successfully in 2009 during Servicing Mission 4 (SM4). STIS has since been operating on Side-2 electronics with all ultraviolet and optical channels.
Current Status
STIS is Operational.
Web Tools and Helpful Links
HST Exposure Time Calculator (ETC)
HST Spectroscopic Legacy Archive (HSLA)
Program Information
STIS Instrument Resources
Recently Published Documents
Instrument Science Reports (ISRs)
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September 30, 2026Matthew Dallas, Sean Lockwood
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ISR 2026-06: Updates to STIS NUV Dark Calibration
September 25, 2026Jacqueline Brown, Sean Lockwood, TalaWanda Monroe, Amy Jones, Joleen Carlberg -
ISR 2026-05: Spatially Scanned STIS Spectra of the Exoplanet Host Star 55 Cnc
August 21, 2026D. E. Welty, J. D. Lothringer, D. K. Sing, A. M. Jones, A. Riley, and C. R. Proffitt -
ISR 2026-04: Wavelength Calibration Accuracy Across the STIS CCD: Pipeline Update and User Guidance
July 31, 2026Matilde Mingozzi, Robert Jedrzejewski, Matt Siebert, Dan Welty, Sean Lockwood, Joleen Carlberg -
ISR 2026-03: CCD Rotation Rates From Regular Dispersion Solution Monitoring
July 31, 2026Matilde Mingozzi, Matthew Siebert
Space Telescope
Analysis Newsletters (STANs)
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July 2026 STAN
July 14, 2026 -
June 2026 STAN
June 11, 2026 -
May 2026 STAN
May 19, 2026 -
March 2026 STAN
March 16, 2026 -
November 2025 STAN
November 17, 2025
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