It multiplies the focal length, and the eye relief survives · review
Bresser's 2x Barlow in a 1.25-inch (31.8 mm) barrel, described on Amazon.com as a two-lens design for observing and photography, with a black lens cell and silver barrel.
Bresser’s 2x Barlow is a 1.25-inch (31.8 mm) barrel with a black lens cell and a silver body. The US description calls it a two-lens design, suitable for observing and photography, that doubles the telescope’s focal length.
That is the whole specification. No coatings, no camera thread, no length.
Bresser explains the best reason to own a Barlow: a lower-power eyepiece used in it acts as a much more powerful one while keeping its larger eye lens and more comfortable view. A 20 mm eyepiece in a 2x Barlow gives the magnification of a 10 mm without the 10 mm’s small window and short eye relief.
A two-element Barlow is the standard design and works well at 2x on most telescopes. But on November 7, 2026 this one sold for about $98, within two dollars of Celestron’s X-Cel LX 2x, which publishes three apochromatic elements, full multi-coating, a filter thread and a brass compression ring.
At the other end, Celestron’s Omni 2x costs about a third as much and states full multi-coating.
Earlier European listings of this Bresser reference described four elements. The Amazon.com description says two lenses. This page follows the listing a US buyer actually sees.
On November 7, 2026, Amazon.com listed it at about $98 from a third-party seller, with no offer from Amazon itself.
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.
| Amplification factor | 2x, doubling the focal length, stated |
|---|---|
| Element count | Two-lens design, stated in the Amazon.com description |
| Barrel size | 1.25 in (31.8 mm) |
| Camera thread | Not published by the maker · stated suitable for photography |
| Effect on eye relief | The description says a lower-power eyepiece in the Barlow keeps its larger eye lens and more comfortable viewing |
| Coatings | Not published in the Amazon.com listing. |
| Body | Black Barlow element cell, silver barrel |
| Weight | Not published in the listing text · Amazon's item data gives 82 g (2.9 oz) |
| Amazon reference | B00462T81U |
| EAN | 4007922201078 |
For visual use at 2x, a well-made two-element Barlow is the standard design and works well on most telescopes. Three-element and apochromatic designs matter more on fast telescopes and for photography.
Short eyepieces have small eye lenses and short eye relief. A 20 mm eyepiece in a 2x Barlow gives the magnification of a 10 mm, with the comfort of the 20 mm. Bresser's own description makes this point.
Earlier European listings of this reference described a four-element design. The Amazon.com description says two lenses, and this page follows the listing a US buyer sees.
7.2/ 10
A plain two-lens 2x at nearly the price of an apochromatic triplet, on a US listing that publishes very little beyond the factor and the barrel.
This model is listed on Amazon.com, at ≈ $98 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.
An owner of Bresser eyepieces who wants a matching 2x and accepts a thin specification
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.
2x Barlow · 2 in barrel · ED glass · multi-coated · 2 in filter thread · 1.25 in adapter included
A 2-inch 2x Barlow in ED glass with multi-coated surfaces, a 2-inch filter thread and a 2-to-1.25-inch adapter, so both eyepiece sizes can be doubled.
Best for: A 2-inch focuser and wide-field 2-inch eyepieces that no 1.25-inch Barlow can take
≈ $63
3x Barlow · 1.25 in · apochromatic glass · M42 × 0.75 male thread · 1.25 in filter thread
A short 1.25-inch 3x Barlow in CNC-machined aluminum with apochromatic glass, multi-coated optics, a 1.25-inch filter thread and an M42 × 0.75 thread that takes a camera T-ring.
Best for: A short-focus telescope that needs planetary magnification, or a camera that cannot otherwise reach focus
≈ $24
2x Barlow · 1.25 in · apochromatic glass · M42 × 0.75 male thread · 1.25 in filter thread
A short 1.25-inch 2x Barlow in CNC-machined aluminum with apochromatic glass, multi-coating, a filter thread and an M42 × 0.75 thread for a camera T-ring.
Best for: A first Barlow that will also carry a camera, on a telescope that struggles to reach focus
≈ $19
