So I was looking for roast color measurements with Hamamtsu Spectrometers and ended up looking at pictures of imaging spectrographs.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5948772/

Having misplaced my imaging spectrograph I sallied on... An interesting case study popped up of using a NIR to measure whole and ground beans. The whole beans were spun on a petri dish spinner which is a great idea for the Tonino...
https://www.perkinelmer.com/lab-solutio ... oscopy.pdf