We offer Newtonian reflecting telescopes in apertures of 8", 10", 12.5", and 16". Since all of our tube assemblies are built on a custom basis, the customer may choose his required focal ratio. We routinely build telescopes as fast as F/4 and as slow as our high magnification planetary F/10. All telescopes are manufactured of aluminum and stainless steel for maximum corrosion resistance. Additional features such as mirror cooling fans, tube baffling systems, low profile baffled focusers, and of course high quality optics combine to produce stunning planetary and deep sky images.

Parallax also offers Classical Cassegrain and Ritchey-Chretien telescopes in 10", 12", 16", and 20" apertures. The Classical Cassegrain offers a very long focal length in a relatively compact tube. They are excellent instruments for high magnification planetary and double star work. The Ritchey-Chretien Cassegrain is perhaps the ultimate photographic instrument. It offers a wide, coma free field and is well suited to large format and today's high resolution CCD cameras. Both types of instruments utilize the highest quality, lightweight zero expansion ceramic optics and are provided with an interferometric test report and fringe analysis data.