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http://hea-www.harvard.edu/~swolk/thesis/node68.html.
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1. Quantum Efficiency Correction (a.k.a. `flat-fielding')
Next: Filtering ROSAT HRI data Up: ROSAT HRI Recipes Previous: Correlating Spectral Data with . Although the spatial variation of the quantum efficiency across the HRI is nominally within 10% for most of the detector, occasionally it may be desirable to flat-field a map with preflight calibration measurements. ... Store the new gain map image using ``blink" in SaoImage. ... The quantum efficiency correction (QEC) is the inverse of the intensity determined from the QE map at the source position. ...
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Ссылки http://hea-www.harvard.edu/PROS/PUG/node207.html -- 7.9 Кб -- 01.10.2012
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