What is a primary source on telescopes?

I need a REAL primary source on telescopes, one with good info. I’ve searched all over and cannot fins one, help please!
high school for national history day
at this point anything is fine, I can find a way to make it work.

http://www.telescope.com/control/main/


Comments

What is a primary source on telescopes? — 3 Comments

  1. What sort of information –
    Vendors?
    Telescope Types?
    Optics mathematics?
    Uses?
    Making your own?
    Applications?
    References :

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