As this project strives to incorporate a functional and efficient method of collecting light emitted by the sample, to a Low Temperature, Ultra-High Vacuum Scanning Tunneling Microscope; the student’s role was to properly set up an optical system that ensures light emitted by the sample is collected, via setting up an optical table bolted on the STM vacuum chamber. On top of this table lies an optical system, which main importance is to manipulate the light sample so that all light collected by a mirror be directed to an optic fiber. In this scenario, probing tip-mirror and mirror-fiber alignment is key to ensure optimum light intensity received by the collector that will send the light signal into a light spectrometer.