COS Instrument Handbook for Cycle 25
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Cosmic Origins SpectrographInstrument Handbook for Cycle 25 > Chapter 2: Special Considerations for Cycle 25 > 2.6 NUV Spectroscopic Acquisitions

2.6
Due to increased NUV detector background and mechanism position uncertainties, certain NUV central wavelength (cenwave) settings have proven to be unreliable in the NUV ACQ/PEAKXD target acquisition phase. The cenwave settings listed below have been proven reliable. NUV ACQ/PEAKXD target acquisitions should use one of these settings. Users who wish to use other cenwaves should contact the COS team via the Help Desk.

Cosmic Origins SpectrographInstrument Handbook for Cycle 25 > Chapter 2: Special Considerations for Cycle 25 > 2.6 NUV Spectroscopic Acquisitions

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