An arrangement of six Pleurosigma balticum (now known as Gyrosigma balticum) between two disc shaped diatoms. Prepared by Eduard Thum. Olympus BHB microscope using 450nm LED light.
Images taken using a 10x Nikon Plan Apo NA 0.45 objective, and a 20x Nikon Plan Apo NA 0.65 objective. Leitz Heine condenser set to darkground. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. Single frames (no stacking).