FUV Sensitivity

Details FUV Sensitivity FUV Sensitivity

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008hst..prop11492k&link_type=abstract

HST Proposal ID #11492. Cycle 17

Physics

Scientific paper

DESCRIPTION: This activity confirms COS sensitivity versus wavelength over the entire observable spectrum for all FUV gratings and central wavelength settings. Perform a precise-centering acquisition and observe an appropriate HST flux standard star {chosen from the HST prime standard and FASTEX lists} with the PSA. {A limited BOA characterization is obtained in Visit 3 using primary standard GD153.} No off aperture-center observations are performed in this activity {see COS32 for off-center characterizations}. Spectra will be obtained to meet a Poisson S/N criterion of 30 per sensitivity extraction bin or higher; substantially higher S/N characterization will be utilized in routine Cycle 17 calibration.;

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