Designers of refracting telescopes figured out ... Despite myriad embellishments, however, most optical telescopes in use in the 21st century derive from the two types developed in the 17th ...

Refracting telescopes dominated the nineteenth century, with the size of apertures rising to reach the physical limits for lens manufacture at a diameter of around one metre. A key optical ...

Serving nine UC campuses and two national laboratories, Lick Observatory continues to be at the forefront of groundbreaking ...

Get closer to our solar companions with the best telescopes for seeing planets, just in time for April's full moon and a stunning view of Mercury. Want to focus your stargazing on our cosmic ...

Just a decade later in the 1890s, Otto began developing optical disks for refracting telescopes—fostering a deeper understanding of the universe and beginning a long and storied history of the ...

Early optical researchers replicated raindrops ... and the majority of refracting telescopes are designed this way, even today. Early telescopes were all refracting telescopes of the kind Galileo ...

An affordable telescope that can easily take images of the moon and sunspots on the sun thanks to a planetary camera will please some, but a flimsy build quality and a lack of optical prowess ...

They use glass lenses instead of mirrors, and you look through the telescope from the top. Refractor telescopes have long optical tubes as light travels in a straight line to the eyepiece. Compared to ...

The Explore One STAR70APP Refractor Telescope is a low-cost deep-sky and lunar scope that is good for beginners. Using the ARTelescope App, users can locate constellations, nebulae, and more.

Explore the night sky with the best telescopes to suit every budget and experience level, perfect for observing April's full moon and zooming in on the Pinwheel and Whirlpool Galaxies. April is a ...

The Stull observatory at Alfred University houses one of the larger optical telescopes in NY state, the .82 meter Austin-Fellows Telescope. We also have a remotely operable 16-inch DFM telescope, a ...