Group of Diatoms, a nice arrangement of 11 diatoms. Prepared by Stanley Meakin. Mounted in Styrax and dated December 1957. Olympus BHB using 450nm LED light. 10x Nikon Plan Apo NA 0.45 objective. Olympus Aplanat Achromat condenser, slightly oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 3 stacks of images (from Zerene) combined in Photoshop.