One of the most competitive segments in the amateur telescope marketplace these days spans 3- to 5-inch apochromatic ...

Steerable electro-evanescent optical refractor (SEEOR) chips take laser light in the mid-wavelength infrared (MWIR) as an input and steers the beam at the output in two dimensions without the need ...

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 ...