Sky-Watcher Silver Plossl 12.5mm 52° 1.25″ eyepiece
Looking for a reliable eyepiece that can handle everything - from observing the Moon and planets to exploring nebulae and star clusters? The Sky-Watcher Silver Plossl 12.5mm is exactly the kind of all-round companion that deserves a place in every astronomer's bag. Thanks to its classic 4-element Plossl design and 12.5mm focal length, it offers a comfortable balance between magnification and field of view - perfect for versatile visual observing.
Classic Plossl optical design
The Plossl eyepiece with its 4-element optics has been a trusted standard in astronomy for decades. The symmetric arrangement of two achromatic doublets provides excellent correction of both chromatic and spherical aberration, a sharp image across the entire field of view, and good contrast rendering. The 52° apparent field of view is wide enough for comfortable observing without constant tracking, while avoiding the edge distortions that are common in more aggressive wide-angle designs. Multi-coated lens surfaces keep light loss to a minimum.
Focal length and magnification
The 12.5mm focal length places this eyepiece in the mid-range category. When used with a typical refractor or Newtonian telescope with a focal length of 700-1200mm, you will achieve magnification in the range of approximately 56x to 96x. This is a range where planetary details, double stars, and brighter deep-sky objects really stand out. The barrel diameter is the standard 1.25″, so this eyepiece fits the vast majority of telescopes available on the market.
What can you observe with this eyepiece?
In practice, this eyepiece works especially well for the following types of observation:
- The Moon - medium magnification reveals craters, mountain ridges, and lava plains with excellent contrast
- Saturn and Jupiter - enough magnification to see the main planetary bands and Saturn's Cassini Division, while the field of view remains easy to navigate
- Open star clusters and bright nebulae - such as the Orion Nebula, where the 12.5mm focal length gives a pleasant balance between magnification and image brightness
Who is this eyepiece for?
The Sky-Watcher Silver Plossl 12.5mm is an excellent choice for beginning astronomers looking for their first quality eyepiece, as well as for experienced observers who want a reliable mid-range eyepiece in their collection. Its versatility and proven Plossl optical design make it a worthwhile investment regardless of the type of telescope you use or your area of interest in astronomy.
About Sky-Watcher
Sky-Watcher is one of the most widely used manufacturers of astronomical optics in the world. Their products are popular for reliable build quality, affordable pricing, and broad compatibility with accessories. The Silver Plossl range represents an affordable yet optically sound choice for everyday astronomical observing - perfectly in line with the Sky-Watcher philosophy of making quality views of the universe accessible to everyone.
Technical specifications
| Parameter |
Value |
| Focal length |
12.5mm |
| Apparent field of view |
52° |
| Barrel diameter |
1.25″ |
| Optical design |
Plossl (4-element, 2 achromatic doublets) |
| Lens coating |
Multi-coated |
| Recommended use |
Moon, planets, double stars, bright deep-sky objects |
| Compatible telescopes |
All telescopes with 1.25″ focuser |
