1.25" 12.5mm 50 degree Premium Plossl eyepiece
£23.99£18.99
Out of stock
Get ready to take your stargazing to the next level without breaking the bank! Here at Sky's the Limit, we're thrilled to offer you our premium Plössl eyepieces. With a generous 50-degree apparent field of view, you'll see more of your favourite celestial objects than with typical Plössls.
Looking to expand your eyepiece collection but don't want to spend a fortune? You've found the perfect solution! Our Plössl eyepieces are not only affordable but are also packed with high-end features that provide bright, sharp, and contrasty images.
Key Features
12.5mm focal length
For telescopes with 1.25" diameter focusers (most telescopes)
50-degree apparent field of view: See more of the night sky!
Fully multi-coated on all glass surfaces: Enjoy superior light transmission for brighter views.
Threaded for filters: Easily attach your favourite filters to enhance your observations.
Fold-down eyecup: Find the perfect viewing position, whether you wear glasses or not.
Ideal for deep-sky and planetary viewing: A versatile tool for exploring the cosmos.
Need a little guidance?
Many beginners ask us “How much magnification will that give me?”, often imagining that the higher the number, the better the view. A 12.5 mm eyepiece is a perfect way to show why that isn’t always true. Because magnification is simply the telescope’s focal length divided by the eyepiece focal length, a 1,000 mm telescope produces around 80× with a 12.5 mm eyepiece — a very useful, very comfortable level of power. It’s strong enough to make the Moon look richly detailed, to show Saturn’s rings clearly separated from the planet, and to reveal Jupiter’s cloud belts with real texture. Yet it still preserves brightness, contrast, and stability in a way that extreme magnifications simply can’t.
Manufacturers often advertise a “maximum magnification” equal to about twice the aperture in millimetres, but that figure is more marketing than reality. To reach those powers you need perfect seeing, perfect collimation, and perfect optics, and even then the image is usually soft and unstable. A 12.5 mm eyepiece sits in the sweet spot where the telescope is still behaving itself: the field of view is wide enough to keep objects centred, the image remains bright and sharp, and atmospheric turbulence doesn’t dominate the view. Unlike very short‑focal‑length eyepieces, you’re not fighting every vibration, every wobble, and every shimmer of the air.
This is why the 12.5 mm eyepiece is often the most practical high‑power choice. It gives you a magnified view without pushing the telescope beyond what the sky can support. At this focal length, the balance between size, brightness, and sharpness is just right — large enough to be exciting, but still crisp and steady enough to be genuinely enjoyable. It’s the eyepiece that shows beginners that magnification is a tool, not a goal, and that the best views often come from choosing power wisely rather than simply chasing the biggest number.