Making A Refractor Telescope Norman Remer Pdf 12 New Official

Instead of working on one mirror surface, you will systematically rough-grind and fine-grind four unique surfaces: : Convex front surface of the Crown lens. Surface 2 (R2) : Concave back surface of the Crown lens.

Then came Norman Remer's book. It directly challenged this notion, arguing that making a lens involves the same simple practices and common tools as making a mirror. making a refractor telescope norman remer pdf 12 new