One barrel across a range, with a field that narrows · review
A zoom eyepiece whose own first bullet calls it a fixed 32 mm (1.26 in) Plössl, and whose third says it doubles the magnification.
The title: zoom eyepiece, 52 degree HD zoom lens.
The first feature: Plossl telescope eyepiece 32mm (1.26 in) multilayer coating with 1.25inch, 31.7mm (1.25 in) interface.
The third feature: the zoom eyepiece enhance your view and instantly double its magnification.
A zoom is a variable mechanism. A Plössl is a fixed four-element design. Doubling the magnification is what a Barlow does.
One page, three products, and no focal length range anywhere on it.
The one thing a zoom has that a fixed eyepiece does not is two numbers.
Every other listing on this shelf publishes them: 8–24 mm (0.31 to 0.94 in) twice, 7–21 mm (0.28 to 0.83 in) twice. This one publishes none, and the only focal length that appears anywhere is the 32 mm (1.26 in) in the first bullet — which belongs to a Plössl.
So the column on this page says what is published, which is nothing, and why.
Published in the title, and not attributed to any focal length.
On a zoom that figure means very little on its own. The Astromania on this shelf publishes 30 degrees at 21 mm (0.83 in) and 47 at 7, because the field of a zoom changes with the setting.
Fifty-two degrees at an unstated focal length cannot be compared with either.
The barrel, published twice, to two different precisions.
One and a quarter inches is 31.75 mm (1.25 in). The listing gives 31.7 mm (1.25 in) for the interface and 31.77 mm (1.25 in) for the filter thread — one rounded down, one up.
It is more precision than most of this shelf offers and it is the only place on the page where two numbers describing the same thing are nearly consistent.
Decide.
The eyepiece shelf in this catalog would be a plausible home for a fixed 32 mm (1.26 in) Plössl, and moving it there would mean believing one bullet over a title.
The seller has not settled what this is. Neither will this page, and the columns record all three claims rather than the most convenient one.
American Amazon store sat at about $25 on the day of the survey.
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 October 7, 2026. The live price is at the top of the page.
Same aisle, closest price — what the same spend else shows.
| Focal length range | None published. The title sells a zoom eyepiece; the first feature describes a Plössl telescope eyepiece of 32 mm (1.26 in); no range appears anywhere on the page |
|---|---|
| Apparent field at both ends | 52 degrees, published once in the title and not attributed to either end of any range |
| Eye relief | Not published by the maker. |
| Parfocality | Not published by the maker. |
| Action | Not published by the maker. · The third feature states that the zoom eyepiece instantly doubles the magnification, which is what a Barlow does |
| Stops | Not published by the maker. |
| Barrel size | 1.25 in, stated as 31.7 mm (1.25 in), with a thread for 1.25 in filters given as 31.77 mm (1.25 in) |
| Coatings | Multilayer coating, per the title and the first feature |
| Body | Optical glass and metal, with one soft rubber eyecup and two eyepiece covers supplied |
| Amazon reference | B07ZK18QR2 |
| EAN | 0705989108609 |
The listing says both and this page chooses neither. The title reads: astronomical telescope eyepieces, 1.25 in zoom eyepiece with multilayer coating, 52 degree HD zoom lens. The first feature reads: Plossl telescope eyepiece 32mm (1.26 in) multilayer coating with 1.25inch, 31.7mm interface. A Plössl is a fixed four-element design; a zoom is a variable mechanism. No focal length range appears anywhere on the page, and a zoom without a range has no specification at all. What a buyer receives is not determinable from the listing, which is why the focal length range column says so in full.
That is a third description. The third feature states that the zoom eyepiece enhances the view and instantly doubles its magnification — which is what a Barlow lens does, not what a zoom or a fixed eyepiece does. The Barlow shelf in this catalog is full of that exact sentence. So one page carries the vocabulary of three different products: a zoom in the title, a Plössl in the first bullet and a Barlow in the third. This page prints all three.
Because it is sold as a zoom eyepiece, and a reader searching this shelf will meet it. Moving it to the eyepiece shelf on the strength of one bullet would mean deciding what the product is, which the seller has not done. Leaving it here with its three descriptions printed is the only honest place for it — and the fifty-two degrees in its title, unattributed to any focal length, is the figure a comparison table would otherwise have swallowed without comment.
This model is listed on Amazon.com, at ≈ $25 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 October 7, 2026.
Nothing this page can recommend on published evidence — the three descriptions do not agree
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.
8–24 mm (0.31 to 0.94 in) variable · 15–18 mm (0.59 to 0.71 in) eye relief · stepless twist action · foldable eyecup · 1.25 in
Eight to twenty-four millimeters with eye relief published at both ends — 15 to 18 mm (0.59 to 0.71 in), which is what makes a zoom usable with spectacles.
Best for: A spectacle wearer who wants one eyepiece instead of four, with eye relief guaranteed at every setting
≈ $78
7–21 mm (0.28 to 0.83 in) variable · 30° at 21 mm (0.83 in) and 47° at 7 mm (0.28 in) · 16–33 mm (0.63 to 1.30 in) eye relief · FMC · 1.25 in
Publishes the apparent field at both ends — 30 degrees at 21 mm (0.83 in), 47 at 7 — which is the central compromise of every zoom.
Best for: One eyepiece instead of four, by somebody who wants to know what the long end costs in field
≈ $52
8–24 mm (0.31 to 0.94 in) variable · 1.25 in and 2 in · M43 camera thread
An 8–24 mm (0.31 to 0.94 in) zoom that fits both 1.25 in and 2 in focusers and carries an M43 camera thread, supplied with an extensive accessory set.
Best for: An owner of both 1.25 in and 2 in focusers who also photographs through the eyepiece
≈ $396
