Sky-Watcher Silver Plossl 7.5mm 52° 1.25″ eyepiece
Looking for a reliable eyepiece for detailed planetary observation that delivers a sharp image and a comfortable field of view without unnecessary compromises? The Sky-Watcher Silver Plossl 7.5mm is a classic choice with a proven four-element optical design that has earned its place in the eyepiece cases of both experienced and beginner astronomers for many years.
Optical design
The Plossl eyepiece type uses a symmetric four-element optical layout made up of two symmetrically arranged doublets. This design provides excellent correction of aberrations, high contrast, and comfortable sharpness all the way to the edges of the field of view. The 52° apparent field of view is standard for a Plossl - wide enough for focused planetary observation, where what matters most is not the breadth of the view but the maximum detail and contrast in the centre of the image. The 7.5mm focal length makes this a higher-magnification eyepiece, ideal for conditions when the atmosphere allows you to push your telescope to its resolution limit.
Intended use and compatibility
The short 7.5mm focal length makes this eyepiece particularly well suited for planetary and lunar observation. On telescopes with a focal length in the range of 700-1500mm, it delivers magnification of approximately 93x to 200x - ideal for observing Jupiter's cloud bands, Saturn's rings, or craters on the Moon. The 1.25″ barrel diameter is a universal standard, so the eyepiece fits the vast majority of focusers available on the market.
Please note - at shorter focal lengths, the exit pupil of the eyepiece becomes smaller. We recommend using this eyepiece under good seeing conditions and with telescopes that have quality optics.
Technical specifications
| Parameter |
Value |
| Focal length |
7.5mm |
| Apparent field of view |
52° |
| Barrel diameter |
1.25″ |
| Optical design |
Plossl (4 elements in 2 groups) |
| Magnification range |
approx. 93x-200x (on 700-1500mm telescopes) |
| Series |
Sky-Watcher Silver |
About the Sky-Watcher Silver series
The Sky-Watcher Silver series represents an accessible entry point into the world of quality Plossl eyepieces. Sky-Watcher is a well-established manufacturer of astronomical optics with worldwide distribution, and their products offer solid optical quality at a reasonable price. For observers looking for a functional and reliable eyepiece for their basic collection - or as a complement to a set of eyepieces with different focal lengths - the Silver Plossl 7.5mm is a very practical and economical choice that does not ask you to compromise on optical performance.
