One day when I was out taking NIR-pictures in the late spring of 2017 I saw a tussilago and decided to try UV-imaging of flowers.
I had a Baader U and filters to make BUG3 and BUG5-stacks.
Due to fumbling the UV image was not well i focus. The best one was from the BUG3-stack. (S8612, 2mm + BG3, 2mm)
Camera: Canon EOS 60D, Lens: EL Nikkor Nippon Kogaku 80mm, Filter: BUG3-Stack

I think the green patterns on the closed floretts are quite interesting. It is not visible in the pure UV images.
Fast forward to the spring of 2020:
A 25% crop:

Camera: Sony A7III, Lens: Novoflex Staeble Katagon 4,5 / 60 mm, Filter: BUG3-Stack, Illumination 2x Godox AD200 with quartz tubes. Four Images stacked with Zerene Stacker
A 100% crop

A pure UV image show IMHO less interesting information
A 25% crop:

Camera: Sony A7III, Lens: Novoflex Staeble Katagon 4,5 / 60 mm, Filter: S8612, 2mm + U-360, 2mm, Illumination 2x Godox AD200 with quartz tubes. Four Images stacked with Zerene Stacker
A 100% crop

These images are from me starting to use focus stacking for UV and unfortunately the pure UV image is slightly out of focus.
I have no idea of the correct names of the different reproductive plant parts in this flower.
Edited by UlfW, 03 February 2021 - 12:28.