Refractor to reflector, Schmidt-Cassegrain to Maksutov-Cassegrain - this is everything you need to know about the different types of telescopes. When you purchase through links on our site, we may ...

These scopes also are known as “compound” telescopes and are hybrids that have a mix of refractor and reflector elements in their design. The first compound telescope was made by German ...

The big day’s here: Your first telescope has arrived. You’ve done your research and decided on an 8-inch Dobsonian-mounted reflector, or perhaps a 4-inch refractor, or another model that had a ...

The invention of the reflector telescope stretches back to Isaac Newton in the 17th Century. ... via curved mirrors and lenses, for its optical system. As a best of both worlds solution, ...

If you are a beginning astronomer who wants to start off with a moderately powerful telescope that has the optical power to see ... Gskyer 130EQ Professional Astronomical Reflector Telescope — $ ...

The Sky-Watcher 200P EQ5 telescope is an impressive optical instrument. In terms of budget and optical build, this telescope provides sharp, contrasted details of our open window to the universe.

Optical design: Newtonian reflector Aperture: 5.19" (130 mm) Focal length: 25.59" (650 ... we recommend upgrading several of the accessories to get optimum results from the telescope's optical system.

Reflector telescopes—which include Dobsonian and Newtonian—use mirrors to reflect the light into focus. These bounce light back and forth in the optical tube, which allows for a shorter design.

The venerable telescope has changed markedly over the centuries, ... and only good as an optical instrument near the center. ... this author's Newtonian reflector has a focal length of 900 mm.

The construction of the largest optical telescope ever built has moved one step closer today, with US$500 million in funding now committed from 11 international partners.

The optical and science segment of the largest space telescope ever made now stands complete in the largest clean room on the planet, at NASA's Goddard Space Flight Center. The James Webb Space ...