We like these (or rather, the whole line): https://www.avantes.com/products/spectrometers/compactline/item/1236-avaspec-mini-cl-2048 https://www.avantes.com/pr

We like these (or rather, the whole line): https://www.avantes.com/products/spectrometers/compactline/item/1236-avaspec-mini-cl-2048 https://www.avantes.com/products/spectrometers/compactline/i... You can get them used for below 1000$, eg this listing: https://www.ebay.com/itm/Avantes-Compactline-Avaspec-Mini-/324145546928 https://www.ebay.com/itm/Avantes-Compactline-Avaspec-Mini-/3...