I had to make some design changes because of some stability issues I was having, like mis-alignment of the cuvette holder relative to the front coupler that houses the entrance slit.

Now there is only 1 cm from the face plate to the lip of the coupler for the cuvette holder to fit over, this seemed to make a remarkable improvement on the line of sight alignment form cuvette through slit to cmos camera eye on the emission spectra.

I also gave her some feet!