This was a refracting telescope. It consisted of an objective lens on the end closest to the object and an eyepiece at the other end, which magnified the image produced by the objective lens.

The Stellarvue 180mm f/7 APO triplet refracting telescope represents the finest large refractor available to the discriminating consumer ...

I’d taken a small, 66 mm refracting telescope along with me for the trip and decided to see whether I could capture the green flash as the Sun set over the Pacific. The air was very clear at the ...

With a 90mm aperture and 800mm focal length, this refractor telescope offers a crystal-clear view of the night sky, perfect for both budding astronomers and seasoned stargazers.

Home to the world’s largest refracting telescope, the Yerkes Observatory in Wisconsin was so influential that Albert Einstein insisted on visiting. Now you can too.

It was a memorial to her late husband, Dr. Edward P. Burrell. The observatory houses a Warner & Swasey refracting telescope with a 13 3/8-inch objective, a 4½-inch finder and a 1-inch finder.

Scientists Create First Flat Telescope Lens That Doesn’t Distort Colors The first telescopes refracted light, and today reflectors dominate, but there is a third way to make light focus, and it ...

Born June 29, 1868, in Chicago, George Ellery Hale revolutionized American astronomy by, among other things, championing the construction of ever-larger telescopes. He established Mount Wilson ...

Popular Science StarSense Explorer DX 100AZ Smartphone App-Enabled Telescope See It This 100mm refractor provides a very solid field of view for astrophotography.

A mirror image is the result of light rays bounding off a reflective surface. Reflection and refraction are the two main aspects of geometric optics.

McKim Observatory still houses many of its original instruments, including a 9.53 inch Clark Refractor telescope, a meridian transit telescope, and a gravity driven chronograph. Missing from the early ...