IR Intrapixel Sensitivity

Details IR Intrapixel Sensitivity IR Intrapixel Sensitivity

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008hst..prop11916w&link_type=abstract

HST Proposal ID #11916. Cycle 17

Physics

Scientific paper

In order to characterize the periodic intrapixel sensitivity variation {IPSV} of the WFC3 IR array, we will analyze full-frame IR observations of a star field {in the Omega Centauri globular cluster} in three bandpasses {F110W, F160W, and F098M} dithered on an NxN grid. The measurements will be used to quantify systematic trends in aperture photometry of stars with pixel phase, defined as {x mod 1, y mod 1}, where {x,y} is the center of the stellar image at subpixel precision. Grid sizes of N=2 and N=3 are justifed in Additional Comments of Proposal Description.;

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