Quantity   Component name
1 × Raspberry PI any with a camera port will do
1 × Raspberry PI camera without the IR filter The easiest way to use a known, characterized CMOS sensor that is available and cheap
1 × 3D-Printed case
1 × DVD-R to cut a difraction network It has to be a DVD-R, not a CD, not a BlueRay, not other types of DVD
1 × A safety razor to construct an optical slit
1 × Two laser sources of different wavelenghts for calibration. e.g. 532 and 650 nm laser pointers.