An arrangement of 25 diatoms. Some movement has occurred. No information on where they are from or what they are mounted in. Prepared by Brian Darnton. Olympus BHB microscope using 450nm LED light. 10x Nikon Plan Apo NA 0.65 objective. Olympus Aplanat Achromat condenser, brightfield lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 54 images stacked in Zerene (Pmax).