Topical Issue - Space Weather Instrumentation
Open Access
Technical Article

Fig. 4

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Overview of the Data Reduction Pipeline. The data reduction pipeline for the MOF-based synoptic telescopes consists of three modules, which, respectively: subtract the dark; compute and correct for the flat field frame . evaluate and correct for the atmospheric extinction and the orbital trend; compute and subtract the leak calibration frame ; The registration module consists of other three modules,which, respectively: compute and apply the polarization registration (σ+,σ), compute and apply the wings registration (B,R), compute and apply the channels registration (K, Na). The final module computes the K and Na line-of-sight magnetogram () and Dopplergram () synoptic maps.

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