1. A hyperboloid cooling tower was patented by Frederik van Iterson and Gerard Kuypers in 1918.

2. If like me you own some sort of reflector telescope, whether this be a Newtonian, Dobsonian, Ritchey Chretien or as I have a Hyperboloid Astrograph then you'll know that there is a very strong importance on Collimation, the faster the optics the more critical Collimation becomes, especially for imaging

3. If like me you own some sort of reflector telescope, whether this be a Newtonian, Dobsonian, Ritchey Chretien or as I have a Hyperboloid Astrograph then you’ll know that there is a very strong importance on Collimation, the faster the optics the more critical Collimation becomes, especially for imaging.