If you want to get some serious machine I would look for NirScan Nano. It is not cheap (~1,5k) but the performance is solid. Another possible route is getting m

If you want to get some serious machine I would look for NirScan Nano. It is not cheap (~1,5k) but the performance is solid. Another possible route is getting mems based spectrometry sensor from Hamamatsu (~600) but building well performing acquisition board is not that simple and evaluation board is quite expensive.