Late Breaking News
- COS now offers resolutions of 8,000 - 12,000 between 900 and 1100 Å
- Exposure Time and S/N calculated by the ETC for the G130M/1055 and G130M/1096 Settings are not correct.
- Change to COS FUV Pulse Height Filtering to Lower the Observed Dark Rate.
- Update to the dark rates of the COS FUV segments and impact on ETC calculations for Phase I proposals
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 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 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.
in the Last 45 Days
G. Kriss 26 Apr 2013
C. Proffitt 08 Apr 2013