Well done John. I am still interested in feedback especially if you found any problems with my instructions.
I am working through reducing my echelle spectra. Various things have delayed this but I need to now just get on and crash through it having tried the various tutorials.
One of the delaying activities was learning to use Python with ANACONDA as the I could not open the multi-spectra FITS format with the standard amateur tools (ISIS etc.) this is not an issue with standard slit spectra. I also used Python to complete fully automating the collection of echelle spectra!