A spread of magnifications, or four that overlap · review
Three 1.25-inch Plössls of 4, 10 and 25 mm with a 2x Barlow: four-element, 50-degree, fully multi-coated, internally blackened metal eyepieces with filter threads, and a Barlow that takes a camera T-ring.
Astromania gives what most budget sets leave out: four-element Plössl design, a 50-degree apparent field, full multi-coating and internally blackened barrels. All three eyepieces are metal, threaded for 1.25-inch filters, with fold-down rubber eyeguards.
4, 10 and 25 mm, plus a 2x Barlow. On a 650 mm reflector that is 26x, 65x and 162x, and 52x, 130x and 325x with the Barlow. The 25 mm and the 10 mm are also the two eyepieces most first telescopes come with, so for many owners this set duplicates twice and adds the 4 mm and the Barlow.
A 4 mm Plössl has eye relief of roughly 3 mm, whatever the listing’s general claim of long eye relief. The 10 mm in the Barlow gives the power of a 5 mm with far more comfort.
The 2x Barlow has T-threads, so with a T-ring it carries a DSLR at the eyepiece end. Astromania pitches the kit for short, fast telescopes, where the 4 mm and the Barlow are most useful.
On November 7, 2026, Amazon.com listed it at about $48 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 spread | 4, 10 and 25 mm, plus a 2x Barlow (six powers in all; the listing counts four combinations) |
|---|---|
| Duplication risk | 10 mm and 25 mm are the two eyepieces most first telescopes ship with |
| Optical designs | Plössl, four elements, 50° apparent field · fully multi-coated · internally blackened barrels · full metal construction |
| Included Barlow | 2x, 1.25 in, with T-threads for a camera T-ring (sold separately) |
| Filters | None included · each eyepiece threaded for 1.25 in filters |
| Barrel size | 1.25 in |
| Case | Not published by the maker. |
| Amazon reference | B01N8TU3H5 |
| EAN | 6970019296012 |
Divide your telescope's focal length by each eyepiece. On a 700 mm refractor: 28x, 70x and 175x, and with the Barlow 56x, 140x and 350x. The last is beyond what a small aperture can use.
On long-focus telescopes it gives high power, but a 4 mm Plössl has eye relief of about 3 mm, so the eye must almost touch the lens. Many observers prefer the 10 mm in the Barlow, which gives the power of a 5 mm with the 10 mm's comfort.
Yes, to the Barlow, which has T-threads for an optional T-ring.
This model is listed on Amazon.com, at ≈ $48 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.
Replacing lost or poor supplied eyepieces, where the 4 mm and the Barlow add the high powers
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.
Three Plössls 6/12.5/20 mm · 4 elements · 50° apparent field · multi-coated · fold-down eyecups
Three 1.25-inch Plössls of 6, 12.5 and 20 mm: four-element, 50-degree, multi-coated eyepieces with filter threads, fold-down eyecups for glasses and dust caps.
Best for: An eyeglass wearer buying three eyepieces, where the eyecups matter more than a filter
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Five Plössls 32/17/13/8/6 mm · 52° apparent field · 2x Barlow · Moon and planetary filters · metal case
Celestron's Eyepiece, Barlow and Filter Kit: five four-element, fully multi-coated Plössls of 32, 17, 13, 8 and 6 mm with a 52-degree field, a 2x Barlow, a Moon filter and planetary filters in a foam-lined metal case.
Best for: A telescope worth equipping properly in one purchase, where the 32 mm low-power end matters
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15 mm Kellner and 6 mm Plössl · 2x Power Lens with T-threads · #80A blue, #25 red and Moon filters · foam-lined case
Celestron's AstroMaster Accessory Kit: a 15 mm Kellner and a 6 mm Plössl, a 2x Power Lens with T-threads, #80A blue, #25 red and Moon filters, a microfiber cloth and a foam-lined case.
Best for: A beginner telescope needing a 6 mm, a Barlow and filters rather than a drawer of eyepieces
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