This is a classic Takahashi Epsilon 130 Hyperbolic Astrograph from the 1980’s. It was quite revolutionary at that time and is still a very desirable telescope for astrophotography. Although this one was designed for film cameras it is quite easy to use it with a modern DSLR since the image plane for the DLSR is actual smaller than the 35mm frame the design supports. It is compared with a current model hyperbolic astrograph of nearly identical specifications.

Takahashi Space Boy Mount:    • Takahashi Space Boy Mount  

You may want to watch Ed Ting’s superb video here:    • A look at a RARE ca. 1985 Takahashi E...  

Sharpstar HA130: https://www.sharpstar-optics.com/Prod...