Wavelength and Flux calibration of the ACS/SBC PR110L and PR130L prisms

Computer Science

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Hubble Space Telescope, Hst, Space Telescope Science Institute, Advanced Camera For Surveys, Acs, Pr110L, Pr130L, Solar Blind Channel, High Resolution Channel, Flux Calibration

Scientific paper

Wavelength- and flux calibrations are presented for the ACS/SBC PR110L and PR130L slitless spectroscopy modes. The calibrations were derived from Cycle 13 observations of two QSOs at redshift z=0.098 and z=0.168 (for the wavelength calibration) and two white dwarf standards (for the flux calibration), and are made available to users as configuration files for the aXe software package. Both the trace- and wavelength solutions include spatial variations across the SBC detector, and flat-fields (compatible with the aXe flatfield cube format) are provided to correct for the detected large-scale sensitivity variations. Shifts between direct images obtained in different passbands are also quantified, and corrections relative to the reference (F165LP) passband are given.
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