| タイトル | Optimal Extraction with Sub-sampled Line-Spread Functions |
| 著者（英） | Gull, Theodore; Bowers, Chuck; Lindler, Don; Collins, Nicholas R. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2002-01-01 |
| 言語 | eng |
| 内容記述 | STIS long-slit medium resolution spectra reduced in CALSTIS extended-source mode with narrow extraction heights (GWIDTH=3 pixels) show photometric uncertainties of +/- 3% relative to point-source extractions. These uncertainties are introduced through interpolation in the spectral image rectification processing stage, and are correlated with the number of pixel crossings the spectral profile core encounters in the spatial direction. The line-spread-function may be determined as a function of pixel crossing- position from calibration data sub-sampled in the spatial direction. This line spread function will be applied to science data to perform optimal extractions and point- source de-blending. Wavelength and breathing effects will be studied. Viability of the method to de-convolve extended source 'blobs' will be investigated. |
| NASA分類 | Life Sciences (General) |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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