Magnification is a division, not a number on a box · review
A 10 mm Plössl with four elements in two groups, fully multi-coated, in a metal housing with a filter thread, published at 65 g.
The bottom line The best-documented Plössl on this shelf, missing only the field figure that would complete it.
Thirty-seven by thirty-seven by forty-five millimetres, sixty-five grams, four elements in two groups, full multi-coating, a 1.25 in barrel with a filter thread. That is a real description, and it is unusual: most eyepiece listings publish a focal length and a barrel size and stop.
Two cemented pairs. Cementing removes two air-to-glass surfaces compared with four separated elements, which is why the classic Plössl is contrasty. The coating claim then applies to fewer surfaces, each of which matters more.
Apparent field. It decides how much sky is visible at a given magnification, and it is the number that separates a Plössl from a wide-field design. It does not appear.
The maker describes a large eye relief and does not quantify it. On a 10 mm Plössl the geometry puts it at a few millimetres, and a fold-back eyecup manages the problem rather than removing it.
French and Italian Amazon stores ran from 25 € to 28 € on the day of the survey.
American and British Amazon stores list it in local currency, which the euro range above sets aside.
German Amazon store stood above 1.6× the cheapest country. A gap that size normally means stock forwarded from abroad rather than a seller on the ground, so that figure is left out of the range above.
Spanish Amazon store gave no result whatever, so the buy button there opens a search rather than an empty page.
Figures as Keepa reported them on the day this page was last updated. Stock and pricing shift without warning.
Prices quoted in this text were read on 17 September 2026. The live price is at the top of the page.
| Focal length | 10 mm |
|---|---|
| Apparent field | The listing does not carry it |
| Eye relief | Fold-back rubber, described as suitable for spectacle wearers |
| Barrel size | 1.25 in (31.7 mm) with a filter thread |
| Optical design | Plössl — four elements in two groups, as the maker states it |
| Coatings | Full multi-coating, as the maker states it |
| Weight | 37 × 37 × 45 mm, as the maker publishes them · 65 g, as the maker publishes it |
| Supplied accessories | Rubber eyecup and a twist pack for storage |
| Amazon reference | B06ZZWVKMT (same reference on 5 Amazon marketplaces) |
| EAN | 4007922042183 |
On a small mount, a heavy eyepiece shifts the balance and can make the tube drift. Sixty-five grams is light, and publishing it lets the effect be judged before buying.
It says how they are arranged — two cemented pairs, which is the classic Plössl. That determines the number of air-to-glass surfaces, and therefore how much the coating claim is worth.
8 mm focal length · apparent field stated two ways · four elements
A four-element fully multi-coated Plössl of 8 mm focal length in a metal 1.25 in barrel, with a fold-down rubber eyecup and a filter thread.
Best for: A step up from a supplied short eyepiece, on a case-based collection
≈ $17
25 mm focal length · 50° apparent field · four elements
A 25 mm Plössl with a 50-degree apparent field, coated optics, a metal body, rubber eyecups and a filter thread.
Best for: The finding eyepiece — the one that stays in the focuser most of the evening
≈ £32 / €34
12 mm focal length · 60° apparent field · six elements
A six-element fully multi-coated eyepiece of 12 mm focal length with a 60-degree apparent field, a twist-up eyecup and a knurled rubber grip.
Best for: The eyepiece that stays on the planets, used with gloves on a cold night
≈ $93 / £88 / €106
