An arrangement of selected diatoms from the North Sea. Prepared by Brian Darnton. Olympus BHB microscope using 450nm LED light. 20x Nikon Plan Apo NA 0.65 objective. Olympus Aplanat Achromat condenser, brightfield lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. Two stacks prepared in Zerene (Pmax) and pasted together in Photoshop.
Nice arrangement with a really large Coscinodiscus sp. in the middle.