Magnification is a division, not a number on a box · review
Astromania's 8 mm Plössl: a four-element, fully multi-coated 1.25-inch eyepiece with a 50-degree field, an aluminum body, a filter thread and a fold-down rubber eyeguard.
Four elements, fully multi-coated, a 50-degree field, aluminum body, filter thread, fold-down rubber eyeguard and dust caps. Astromania’s listing now states the field once, as 50 degrees.
On a 650 mm reflector, 81x; on a 900 mm refractor, 113x. It is the planetary eyepiece for many small telescopes and the high-power one for slow, long tubes.
The listing repeats the “long eye relief” sentence used on Astromania’s 4 mm. For an 8 mm Plössl, expect about 5.5 mm. Without glasses that is comfortable enough; with glasses it is tight.
Weight. Every other line of the build is stated.
On November 7, 2026, Amazon.com listed it at about $17 from a third-party seller.
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 November 7, 2026. The live price is at the top of the page.
Same aisle, closest price — what the same spend else shows.
| Focal length | 8 mm (0.31 in) |
|---|---|
| Apparent field | 50°, stated |
| Eye relief | Not published as a figure · "long eye relief" claimed · an 8 mm Plössl typically gives about 5.5 mm |
| Barrel size | 1.25 in, with a female filter thread |
| Optical design | Plössl, four elements |
| Coatings | Fully multi-coated, stated |
| Weight | Not published by the maker. |
| Supplied accessories | Plastic dust caps · fold-down rubber eyeguard |
| Amazon reference | B01N8T8FF9 |
| EAN | 6970019296005 |
81x on a 650 mm reflector, 88x on a 700 mm refractor, 113x on a 900 mm, 254x on an 8-inch Schmidt-Cassegrain at 2032 mm.
If your telescope came with a 25 mm and a 10 mm, an 8 mm adds little. If it came with a 25 mm and a 4 mm, the 8 mm fills the most-used gap.
About 5.5 mm of eye relief, typical for an 8 mm Plössl, is tight. For eyeglass wearers, a 16 mm in a 2x Barlow gives the same power with more room.
7.2/ 10
A properly coated metal Plössl at a medium-high power, sold with a long-eye-relief claim that 8 mm only half supports.
This model is listed on Amazon.com, at ≈ $17 at the last reading. Listed is not the same as in stock: availability changes daily, and the buy box shows the live price.
Details checked on November 7, 2026.
A step up from a supplied short eyepiece, for planets and the Moon
Listed because the eyepiece or part names this scope.
Specifications: the manufacturer sheet for telescopes and observing optics and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
4 mm (0.16 in) Plössl · 50° apparent field · four elements · fully multi-coated · 1.25 in
Astromania's 4 mm Plössl: a four-element, fully multi-coated 1.25-inch eyepiece with a 50-degree field, an aluminum body, a filter thread and a fold-down rubber eyeguard.
Best for: High-power lunar and planetary work on a long-focus telescope, by an observer without glasses
≈ $16
10 mm (0.39 in) Plössl · four lenses in two groups · fully multi-coated · 65 g (2.3 oz) · 37 × 37 × 45 mm
Bresser's 10 mm Plössl: four lenses in two groups, fully multi-coated, in a metal 1.25-inch housing with a filter thread, reversible eyecup and storage case, published at 65 g.
Best for: A dependable medium-power eyepiece for a case being built properly
≈ $98
6 mm (0.24 in) Plössl · 50° apparent field · four elements · blackened lens edges · anodized aluminum
Celestron's Omni 6 mm: a four-element Plössl with a 50-degree field, multi-layer coatings, blackened lens edges, an anodized aluminum barrel with a filter thread and a fold-down rubber eyecup.
Best for: Planetary detail on a medium-focal-length telescope, from a maker with a US warranty
≈ $32
