ISR 2023-26: Monitoring COS Spectral Placement after an OSM1 Home Position Move
November 30, 2023J.H. Debes et al.
About COS
The Cosmic Origins Spectrograph (COS) was installed on the Hubble Space Telescope (HST) in May 2009. COS performs high-sensitivity, medium- and low-resolution spectroscopy of astronomical objects in the 815-3200 Å wavelength range. COS significantly enhances the spectroscopic capabilities of HST at ultraviolet wavelengths, providing observers with unparalleled opportunities for observing faint sources of ultraviolet light.
The primary science objectives of the instrument are the study of the origins of large scale structure in the Universe, the formation and evolution of galaxies, the origin of stellar and planetary systems, and the cold interstellar medium.
This COS spectrum of a massive star in the LMC encodes information about the properties of its stellar wind, the intervening interstellar and circum-galactic media, enabling a wide range of legacy studies.
Current Status
COS/FUV is operating nominally.
COS/NUV is operating nominally.
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Instrument Science Reports (ISRs)
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ISR 2023-25: Overview of COS Lifetime Position 6 Calibration
November 16, 2023R. Sankrit et al. -
ISR 2023-24: Investigating the Long-term Repeatability of the COS OSM1 Mechanism
November 07, 2023S. Hasselquist et al. -
ISR 2023-23: Cycle 29 COS NUV Dark Monitor Summary
October 30, 2023C.I. Johnson -
ISR 2023-22: Cycle 29 COS FUV Dark Monitor Summary
October 16, 2023C.I. Johnson