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Any thoughts as to how I can insert a radially-gradient neutral density filter at an intermediate focus?

https://reynardcorp.com/wp-content/uploads/2020/09/Reynard-Corp_Bullseye-Apodizing_Datasheet.pdf

Ultimately, I’m trying generate PSFs that account for diffraction at the aperture.

Thanks!

I think I’ve answered my own question.  “Slide Surface” should work for this.


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