Fluorescence microscopy is rapidly expanding from conventional compound microscopes to stereo microscopy but its cost and complexity have traditionally limited that expansion to high-end, research-level stereos. Nightsea’s Stereo Microscope Fluorescence Adapter, an add-on to existing microscopes, lowers that barrier. The fully modular system offers four interchangeable excitation/emission combinations designed to meet a wide range of fluorescence requirements. Users can purchase just the modules that fit their needs or expand at any time. Excitation wavelengths include violet, royal blue, cyan, green, and a white light head is also available. Nightsea