Making A Refractor Telescope Norman Remer Pdf ((exclusive)) Site

Before Remer published his definitive book, information on building refractors was scattered across obscure journals, outdated patents, and cryptic forum posts. Most ATM literature focused on the Newtonian reflector because it involves grinding only one curved surface and requires only flat mirrors for the secondary. A refractor, however, requires grinding and polishing two separate lenses (a crown and a flint), each with two precisely curved surfaces, and then cementing or spacing them perfectly to correct for chromatic aberration.

He describes a simple “edge drop” method using a dial indicator and a rotating table. You grind until the sagitta (depth of curve) matches the calculated value to within 0.001 inch. This ensures the two inner surfaces are perfectly complementary. making a refractor telescope norman remer pdf