microspectrograph

noun

mi·​cro·​spec·​tro·​graph -ˈspek-trə-ˌgraf 

: a microspectroscope equipped (as with a camera) to make a graphic record of the observed spectrum

microspectrographic

-ˌspek-trə-ˈgraf-ik 

adjective

microspectrography

-ˌspek-ˈträg-rə-fē 

noun

plural microspectrographies