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Hubble Space Telescope
Cosmic Origins Spectrograph

Cosmic Origins Spectrograph

The Cosmic Origins Spectrograph (COS) was installed on the Hubble Space Telescope (HST) in May 2009. COS is designed to perform high-sensitivity, medium- and low-resolution spectroscopy of astronomical objects in the 1150-3200 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 mission 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.

More information and documentation on the Cosmic Origins Spectrograph can be found at CASA, the University of Colorado's Center for Astrophysics and Space Astronomy, Ball Aerospace, and the Experimental Astrophysics Group at the University of California - Berkeley.

Documents Added
in the Last 45 Days

COS Instrument Handbook for Cycle 23
J. Debes Jan 2015

June 2015 STAN
In this STAN we inform Cycle 23 users who are preparing to submit a Phase 2 of a new mandatory keyword selection and that using TIME-TAG mode is recommended.
COS+STIS Team 29 Jun 2015

ISR 2015-02: Summary of the COS Cycle 20 Calibration Program
We summarize the Cycle 20 calibration program for the Cosmic Origins Spectrograph (COS) on the Hubble Space Telescope, covering the time period from November 2012 through October 2013. We give an overview of the Calibration plan and status summaries for each of the individual proposals comprising the C20 Calibration program.
J. Roman-Duval 11 Jun 2015 (pdf)

ISR 2015-01: The COS/FUV Focus Sweep Program at Lifetime Position 3 (LENA2/13635)
We present the results from the focus sweeps performed in July 2014 in preparation for the move to lifetime position 3 with the G130M, G160M, and G140L gratings using the bright stars Feige 48 and AzV75 as targets.
A. Fox 20 May 2015 (pdf)

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