Based on my interpretation of this website, I believe it's the astronomers. :)
As it stand tall to the sky I'm surprised it could be that tall without falling down because some days it can be very cold in the winter.
Answer:
No. You will not have to pay unless it asks you to for some reason. Try contacting them if it does. But im sure it most likely wont!
I wish I could help but I’m just answering any questions to get points
