A smooth mechanical focuser to hold your eyepieces. 4. Digital Copies and PDF Availability

Go to archive.org and search “Norman Remer making a refractor” without the PDF extension. Look for files with “12” in the description or page count. That is almost certainly the “12 new” version you want.

The community has also tackled practical tube mechanics. In forum discussions, Remer's book has been cited as the go-to reference for designing internal baffles—the strategically placed rings inside the tube that block stray light to maximize contrast. Builders have discussed everything from the geometry of the light cone to using flat black paint on a broom handle to coat the inside of a long tube.

You will not find a legitimate, free PDF of Norman Remer's Making a Refractor Telescope online. The book, while out of print, is a copyrighted work from a reputable publisher. The copies you might find on file-sharing sites are illegal and often unreliable. My mission here is not to point you toward a pirated copy but to show you how to legally and effectively use Remer's work to achieve your goal.

A rear, concavo-convex or biconcave lens made from high-dispersion glass (such as N-SF1) that corrects the color dispersion caused by the crown lens.

Building a high-quality refractor telescope has long been considered an advanced feat reserved for master opticians. However, Norman Remer’s seminal book, demystifies this complex craft for the amateur enthusiast. The Core Philosophy of Norman Remer