" Hi, my name is frans.

I'm your crazy scientist for today. "

This is a screendump from the program that was written completely from scratch in turbo pascal, with some assembler coding for the device drivers to handle the equipment. On the right are the setting to the mirrors and the gratings and some dials for fine tuning the piezo elements for precision positioning of the mirrors and the gratings. On the bottom right are the buttons for saving and loading data, setting the exposure time, end controlling the temperature of the detector.

The big window on the left is an actual image of the spectral lines of the Na-douplet (a sodium discharge tube was used for testing and calibrating). The fine structure superimposed on these lines is caused by the interferometer, and after fourier analysis (shown in yellow in the bottom graph), it yields the very precise frequentie of the line.

Below that are the buttons to start the analysis part of the program, and message line at the bottom gives various information and on-line help.