Aulacodiscus orientalis, WA Firth

Aulacodiscus orientalis

Aulacodiscus orientalis from Honolulu, Sandwich Island. Two diatoms on the slide. Prepared by WA Firth. Olympus BHB microscope using 450nm LED light. 40x Leitz Pl Apo NA 1.00 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, brightfield lighting. 2.5x Nikon CF PL photoeyepiece, removed 20mm of extension tubes to increase the field of view. Monochrome converted Nikon d850 camera. 21 images stacked in Zerene (Pmax).