UV: Potted plants in the winter time: Pacific North West

[ori333]

Hello UVP,

 

Testing a UV camera under natural sunlight.

 

Can someone please recommend a potted plant to can buy now (December) in the Pacific North West to test?

Something I can move around and it will be obvious that the camera is picking up reflected UV light from the flower.

Called around and sunflowers are not available.

 

Also open to other recommendations too besides potted plants.

 

Thank you

Valentin Siderskiy

 

P.S.

It works indoors with a UV flashlight.

[Andrea B.]

UV-dark and UV-light pigments. Let me look for the links.

 

Member Jonathan (JMC) made a nice set of reflective standards - black, white & greys -

from magnesium oxide, plaster of paris and carbon black.

https://www.ultravio...dpost__p__16514

Towards the end in Post #39 you can see Jonathan's completed set.

 

Jonathan also tried the Semple Black paint.

https://www.ultravio...paint-black-20/

 

If you make a couple of these, then you will have something permanent to use

when sunflowers are not available.

(Did you check Whole Foods? If anyone would have sunflowers, they would. La!!)

 

There are also rather expensive reflective standards sold by Ocean Optics or LabSphere.

https://www.oceaninsight.com/products/sampling-accessories/solid-sampling/Reflectance-standards/Reflectance-standards/

[enricosavazzi]

Some plastics that are white/whitish in VIS have a predictably high UV reflectance or high UV absorbance (unless treated with additives or surfactants than may change their UV properties). PVC for example reflects well down to about 380-390 nm and absorbs anything lower. Polycarbonate absorbs virtually all UV and transmits virtually all VIS.

 

See for example https://www.ultravioletphotography.com/content/index.php/topic/3403-plastic-fantastic .

[ori333]

Cool thanks!