Today i hooked up my Devil saw tooth generators to my main oscilloscope ...set the little monitor back to 32 line for now and that seems to work fine i could adjust the scope raster small to scan a slide not sure how small the raster dot has to be but i should think it would give a result at least if the image is large but thinking ahead here .
It gave me a chance to try some spot wobble ac coupled the video going to the opto coupler to the frame sawtooth
This scope does not have a z axis input ,and it seems work pictures are flipped and inverted but results they are .
Got to clean my scope ...i have to point out it is in my shed