|COS Instrument Handbook for Cycle 25|
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.