Space Telescope Science Institute
COS Instrument Handbook
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Cosmic Origins SpectrographInstrument Handbookfor Cycle 20 > Chapter 12: The COS Calibration Program > 12.1 Introduction

In this chapter, we provide a brief overview of the calibration observations obtained during ground testing and on-orbit through Cycle 19. Potential Cycle 20 observers should assume that all of these calibrations will be completed by the time that Cycle 20 begins.
Observers wishing to use instrument configurations that are not addressed by these calibration plans should assess their specific calibration needs and include time in their Phase I proposal for any additional calibrations that are required. Proposers who believe that more extensive calibration observations or analysis may be of general benefit to the COS user community should consider submitting a Cycle 20 Calibration Outsourcing Proposal (see the Cycle 20 Call for Proposals for details).

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