By James L. Chen Ten years ago, before owning my The Vixen SX2 with Star Book TEN, I had my Brandon 130-mm f/8 apochromatic refractor mounted on an early 1950s Unitron equatorial mount equipped with a mechanical Polarex clock drive. The mount was big, heavy and bulky, and the clock […]

Editor’s Note: Springer describes Building and Using Binoscopes thus: “Focusing on both homemade and commercial products, this book provides the reader with simple and straightforward information about the modelling and building of binoscopes. Binoscopes can be thought of as binoculars enlarged to the size of telescopes: essentially, a combination of […]