An arrangement of diatoms from McMurdo Sound, Antarctica. Prepared by Brian Darnton. Nice, high contrast slide, although there are some issues with the adhesion of the diatoms. 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).