VLBI data of SDSS J101747.09+393207.7

Raw observational data were collected by the European Very Long Baseline Interferometry Network (EVN). Subsequent systematic data reduction was performed with professional astronomical software, where all operational procedures were completed using the Astronomical Image Processing System (AIPS) and DIFMAP interferometric imaging software.

The entire processing workflow strictly complies with standard protocols for radio interferometry. We sequentially conducted the import of raw visibility data, phase and amplitude calibration, systematic bias correction, filtering of bad data and noise artifacts, as well as image reconstruction. The observational data were optimized stage by stage, and standardized final data files were produced ultimately.