Regarding freezing of the 3DPlot script: When I am processing a fits file that was generated by stacking a number of .CR2 files with DSS (3774x2298 i16 pixels, 50 Mbytes), the script freezes at 60%. A 1600x1600 version completes quickly to 100% , but fails with "out of memory" before actually drawing (Vista 32 task manager reports 1.6 GBytes of 3GB used. Smaller pictures (e.g. 500x500 pixels) work fine
Georg