A slide of Rutilaria radiata from Oamaru, New Zealand. No makers name on the slide, although I cannot read the top work on the right hand sticker. If I find a name I will update this. Olympus BHB microscope using 450nm LED light. Main high magnification images using a 63x Leitz Pl Apo NA 1.4 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, brightfield lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. Image stacks prepared in Zerene (Pmax).
The diatoms have moved from the central region with this slide. The mountant is also extremely clear (one of the nicest I have seen), but I am not sure what it is. The combination of movement, which has resulted in a slightly side-on view for the diatoms, and the clear mountant, have resulted in some really nice images, making the spines running along the edge visible.