Actinoptychus heliopelta, CN Walter

Actinoptychus heliopelta
Both diatoms imaged with a 20x Nikon Plan Apo NA 0.65 objective

Actinoptychus heliopelta from Dunkirk Maryland, prepared by CN Walter. Styrax. 16/8/1964. 2 examples on the slide.

Imaged using an Olympus BHB microscope using 390nm LED light. Main stack was done with a 63x Leitz Pl Apo NA 1.40 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, slightly oblique. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 23 images stacked in Zerene (Pmax).