Short, fast, apochromatic refractors with a flat image field that don’t cost a king’s ransom are perhaps the Holy Grail of telescope design. Altair Astro’s 60EDQ f/5 quad astrograph with dual-ED optic

This chunky lens is a terrific telephoto prime with an exhilarating turn of speed www.sigmauk.com

Tim Irwin’s 3D printed 90mm lens is a whole lot better than it looks, says Damien Demolder , and it produces some useful, and fun, results

Since JWST’s launch four years ago, some mind-blowing observations have been made by this internationally operated, state-of-the-art, space-based super-telescope

Andy Westlake tests a small on-camera flash unit with a particularly clever trick

When you want to get closer to the action – Amy Davies shows you the phones that let you do it