Application of speckle and (multi-object) multi-frame blind deconvolution techniques on imaging and imaging spectropolarimetric data

摘要: We test the effects of reconstruction techniques on 2D data to determine best approach. obtained a time-series spectropolarimetric in Fe I line at 630.25 nm with Goettingen Fabry-Perot Interferometer (FPI) that are accompanied by imaging 431.3 and Ca II H. apply both speckle (MO)MFBD techniques. compare spatial resolution investigate impact spectral characteristics. The MFBD perform similar for our nearly identical intensity contrasts. provides better more homogeneous shortest wavelength. MOMFBD deconvolution spectra lead results, but choice settings yields an contrast smaller about 2% comparable resolution. None introduces artifacts spectra. (MOMFBD) has rms noise V/I 0.32% (0.20%). deconvolved thus require high significance threshold 1.0%. A comparison significantly higher S/N ratio from MHD simulation reveals FPI can only detect 30% polarization signal quiet Sun. distribution NCP values speckle-deconvolved matches observations than MOMFBD, shows seemingly artificially sharp boundaries unexpected changes sign. For data, is balanced amplification level prevents detection weak diffuse magnetic fields.