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COS Instrument Handbook
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Cosmic Origins SpectrographInstrument Handbookfor Cycle 22 > Chapter 13: Spectroscopic Reference Material > 13.1 Introduction

13.1
The information in this chapter will help you to select a detector, grating configuration, and observing aperture, and to develop your observing plan. For each grating, the following information is provided:
Note that the quoted sensitivities are estimates for mid-Cycle 22 (April 2015). The COS Exposure Time Calculator (ETC) will be updated as the instrument’s sensitivity continues to evolve. See the COS website for the latest information.

Cosmic Origins SpectrographInstrument Handbookfor Cycle 22 > Chapter 13: Spectroscopic Reference Material > 13.1 Introduction

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