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ISOCAM Interactive Analysis User's Manual Version 5.0 - ISO - ESA

ISOCAM Interactive Analysis User's Manual Version 5.0 - ISO - ESA

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21.7. FREQUENTLY ASKED QUESTIONS AND PROBLEMS 291<br />

Figure 21.1: The raster maps using a standard CIA procedure (see text for details). Left panel<br />

shows the LW3 data, while the right panel shows the LW2 data. Both data sets are affected by<br />

periodic patterns due to bad flat-field determination, as well as long term transients.<br />

Figure 21.6: The results of the long-term transient correction and variable flat-field determination.<br />

Variable flat-field was performed using the DivSky method, with parameter setup as<br />

indicated in Table 21.4. LW3 is on the left, and LW2 on the right. Compare with Fig. 21.1 to<br />

measure the improvement

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