Telescopes and spyglasses

[Splint she/her]

So, did audiobooks for the Stormlight books (I've read through WaT, so spoilers)

Spoiler

I  am remembering that the Thaylen had some special higher tech spyglasses for their ships/Thaylen City, specifically at the battle of Thaylen Fields. 

Is my brain making this up or is it a thing?

In general I'm trying to find references to optic tech in Roshar.

Spoiler

Maybe there was on the Bridge 4 Airship?

Help?

(I know that astronomy isn't really a thing that Rosharans do, necessarily)

[Cephandrious Maxtori Fae/Faer]

2 hours ago, Splint said:

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I  am remembering that the Thaylen had some special higher tech spyglasses for their ships/Thaylen City, specifically at the battle of Thaylen Fields. 

From a quick search, I found this in RoW chapter 16:

Quote

[Navani] spent a little longer going over readings with Benneh, then checked on the royal astronomers, who were erecting a new set of telescopes made with the highest-quality lenses out of Thaylenah. 

Is that maybe what you're thinking of?