Statistics – Applications
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010hstc.worke...8w&link_type=abstract
"2010 Space Telescope Science Institute Calibration Workshop - Hubble after SM4. Preparing JWST, held 21-23 July 2010 at Space T
Statistics
Applications
Scientific paper
Slitless spectroscopy is generally regarded as a niche, perhaps "difficult", astronomical observation technique. However the low background from space and the high spatial resolution offered by HST instruments has enabled it to become a powerful survey tool, with some applications to single object work. The ST-ECF has been involved with slitless spectroscopy from NICMOS, through ACS to WFC3. Techniques and software have also been developed for the bulk extraction of NICMOS and ACS slitless spectra, which are available through the Hubble Legacy Archive. A short overview of the slitless spectroscopy modes on HST is provided and the essential elements that distinguish slitless from slit or multi-slit spectroscopy practice are detailed. From these elements the strategy for reducing slitless spectra is developed and its implementation in the aXe software package is summarised with examples from ACS and WFC3 spectra. Extension of the basic technique to deal with dithered spectra and contamination are outlined. An application of the decomposition of spectra to the case of a complex slitless spectroscopy scene is described.
Kümmel Martin
Kuntschner Harald
Walsh Jonathan R.
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