The On-Orbit Performance of the Cosmic Origins Spectrograph

Abstract

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.

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@inproceedings{Aloisi2011TheOP, title={The On-Orbit Performance of the Cosmic Origins Spectrograph}, author={Alessandra Aloisi and Theodore Ake and Azalee Bostroem and Ralph C. Bohlin and C. Cox and Rosemary T Diaz and Victoria Dixon and Parviz Ghavamian and P. Goudfrooij and George F . Hartig and P. A. Hodge and Charles Keyes and Gerard A. Kriss and M. Lallo and David P. Lennon and Derck L. Massa and S. Niemi and Cristina Oliveira and R. Osten and Charles R. Proffitt and D. Sahnow and Eric D. Smith and Tracy Wheeler and Melodee Wolfe and Ben York and W. Zheng}, year={2011} }