IR Intra-pixel Sensitivity Variance

Physics

Scientific paper

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Hst, Hubble Space Telescope, Space Telescope Science Institute, Wfc3, Ir, Calibration, Intra-Pixel Sensitivity Variance, F110W, F160W, Hubble Telescope, Wide Field Camera 3, Stsci

Scientific paper

In order to characterize the intrapixel sensitivity variance of the WFC3 IR array, we analyzed full frame IR observations of a star field in Omega Centauri in 2 bandpasses (F110W and F160W) and a star field in 47 Tucanae in 1 bandpass (F160W). To within the measurement error, and independent of wavelength, magnitude bin, or amp, we do not detect any Intra-pixel Sensitivity Variation, IPSV.

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