Imaging in the shortwave ultraviolet spectrum (wavelengths below 300 nm) enables some very exciting applications. Light in these wavelengths is completely invisible (but potentially very harmful) to the unaided eye. I am most interested in a band known as “Solar Blind UV” or SBUV. As shown in the following figure, solar radiation in the 240 nm to 280 nm range is completely absorbed by the ozone in the atmosphere and cannot reach Earth’s surface, thus allowing ultraviolet-emitting phenomena (e.g. electrical discharges, hydrogen combustion, etc.) to be detectable in full daylight.