An example reduction of WFC3/IR slitless data

Details An example reduction of WFC3/IR slitless data An example reduction of WFC3/IR slitless data

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010hstc.worke..67k&link_type=abstract

"2010 Space Telescope Science Institute Calibration Workshop - Hubble after SM4. Preparing JWST, held 21-23 July 2010 at Space T

Physics

Scientific paper

The G102 and G141 grisms in the WFC3 IR channel together cover the wavelength range 0.8-1.6μm with resolutions of R 210 and R 130, respectively. In this contribution we present an example reduction of G102 and G141 slitless data taken during theWFC3 Early Release Science programme. All core tasks are done by the spectroscopic extraction software aXe, which was specifically designed to handle data from the HST slitless modes. The reduction scheme includes a sky background subtraction with a master sky image to achieve a homogeneous, flat background for the spectral extraction and the most recent on-orbit calibrations. Moreover we present a new method for co-adding data from individual slitless images that, similar to MultiDrizzle in direct imaging, allows the rejection of deviating pixels from e.g. cosmic ray hits. As a result of applying this processing we show the spectra of some emission line galaxies down to magAB(F140W) = 24.5, demonstrating the remarkable efficiency and capability of the WFC3 NIR grisms.

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