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Fig. 15

image

Top panel: long-term transient for the module 14 of the observation 1342246963. Blue and green points are frames taken off- and on-target. Bottom panels: images at 122 μm as reduced by archive pipeline (left) and the interactive pipeline with transient correction (right). The huge transient in this 2 × 2 raster observation causes, if not corrected, an uneven background with a negative flux in half of the archival image.

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