SMOV: COS FUV Wavelength Calibration

Details SMOV: COS FUV Wavelength Calibration SMOV: COS FUV Wavelength Calibration

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010cos..rept....6o&link_type=abstract

COS Instrument Science Report 2010-06(v1), 16 pages

Physics

Hubble Space Telescope, Hst, Space Telescope Science Institute, Cos, Cosmic Origins Spectrograph

Scientific paper

COS calibration program 11487 was carried out during SMOV to characterize the wavelength scales of the FUV detector. Science data were obtained with the G130M, G160M, and G140L gratings through the Primary Science Aperture (PSA), simultaneously with PtNe lamp line spectra, obtained through the Wavelength Calibration Aperture (WCA). These data were partially calibrated with the COS pipeline and then, in conjunction with STIS data of the same target, used to derive offsets between the PSA and WCA wavelength scales. These offsets are then used to place the dispersion relations derived from thermal vacuum 2003 (TV03) in the on-orbit frame of reference, so that correct wavelengths can be assigned to the on-orbit COS data.

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