I made different video's of the spectrum near Na D1 and Na D2 in view of procession He I D3 line.
I used JSolex version 2.4.4 using automated detection and full process. Next I searched manual the Spectrum line using Spectrum Debugger. Processing the image with Imagemath :
fixing_banding (clahe (img(Hed3) -continuum), 1.5), 30,20)
Set up :
TLAPO 60/360 f/6, Hoya 1.6, Sol'Ex, ASI290MM
Sharpcap 4, JSolex, IMPPG, CS4
I compared my he I D3 with the one from Didier Favre from the same day and is comparable.