Discover why we've given the ZWO Seestar S30 smart telescope nearly top marks in our latest smart telescope review.

Because light isn't forced to travel in a single, straight line, the optical tubes are shorter than those on refractor telescopes. This also means reflectors are the cheaper option. The mirrors inside ...

Claims to fame: An upscale lake town atmosphere, scenic lakeshore path and nearby observatory ...

It's an early refractor telescope, and back in 1850 ... It's the filter wheel inside here. Those are going to be your narrow-band filters. That's the thing we want to focus on, narrow-band ...

(Nothing can escape from inside a black hole ... Back then, most amateurs used reedy telescopes like my 2.4-inch refractor. A 12-inch reflector was considered a behemoth, something you told ...

Conductors and insulators, free charges and bound charges inside a conductor ... Microscopes and astronomical telescopes (reflecting and refracting) and their magnifying powers.

In a photograph made with an equatorial telescope and a long exposure the ... On the following night the great refractor of the observatory was directed to the spot and a star-like object of ...

Equipped with a 20 cm refractor, it serves multiple purposes, including cometary and occultation observations, and occasionally allows visitors to enjoy night sky viewing through the telescope.

Several Charleston residents lined up to attend the grand opening of the Charleston Planetarium in West Ashley on May 3.

The RedCat 91 is a well-crafted astronomical imaging refractor that is easily portable, with a machined aluminum finish and ...