IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Reflecting telescope made in the ...

For most of us who are not astronomers, the image that comes to mind when describing a reflecting telescope is of a huge instrument in its own domed-roof building on a mountain top. But a reflecting ...

Choosing the best telescope for the money depends to a large extent on what you hope to see. If you want to scan distant nebulas, you can pay $1,000 and up, and it will still be good value. If you’re ...

This powerful Newtonian reflector telescope has hundreds of 5-star Amazon reviews and is at one of its best-ever prices. When you purchase through links on our site, we may earn an affiliate ...

Welcome to the Tuesday Telescope. There is a little too much darkness in this world and not enough light—a little too much pseudoscience and not enough science. We'll let other publications offer you ...

Diffraction spikes, visible in high-power astronomical images, are an intrinsic optical phenomenon in reflecting telescopes, primarily caused by the diffraction and subsequent interference of incoming ...

Early telescope makers, such as John Dollond, patented and commercially produced achromatic refracting telescopes, significantly improving upon earlier designs by reducing color fringing. Henry Fitz ...

The simple mistakes every stargazing newbie makes — avoid these traps and you'll get the best out of your telescope from night one! When you purchase through links on our site, we may earn an ...

For most of us who are not astronomers, the image that comes to mind when describing a reflecting telescope is of a huge instrument in its own domed-roof building on a mountain top. But a reflecting ...