2010b, COS ISR
- D. Massa, C. Keyes, S. Penton, R. Bohlin, C. Froning
The Cosmic Origins Spectrograph (COS) was installed on the Hubble Space Telescope (HST) in May 2009 as part of the most recent Servicing Mission 4. COS is a fourth-generation instrument that has significantly extended HST UV spectroscopic capabilities. This paper highlights the current instrument performance, with particular emphasis on the initial on-orbit characterization during the Servicing Mission Observatory Verification (SMOV) and the subsequent calibration during Cycle 17. Plans for future improvements in the COS on-orbit calibration are also included.