A long focal length folded into a short tube · review
A 100/1400 Maksutov-Cassegrain on an EQ3 equatorial mount, supplied with a 25 mm Plössl eyepiece (56x), a 90° star diagonal and a smartphone holder.
A Maksutov folds its light path with a curved mirror and a thick meniscus corrector. This one packs 1400 mm of focal length behind a 100 mm aperture, which is f/14, in a tube far shorter than a refractor of the same focal length.
Long focal ratios suit the Moon, planets and double stars: high magnification with ordinary eyepieces, very little false color, and a sharp, contrasty image.
The kit sits on an EQ3 equatorial mount. Once its polar axis is pointed north, a single slow-motion knob keeps a planet in the field as the Earth turns. At 140x and above, that is the difference between observing and chasing.
Bresser supplies a 25 mm Plössl, which gives 56x (1400 / 25), a 90° star diagonal and a smartphone holder. For planets the telescope needs a second eyepiece of 7 to 10 mm (140x to 200x). See the first three eyepieces.
On November 7, 2026 the only offer on Amazon.com was a third-party one at about $734. At that price, Celestron’s NexStar 4SE, a 102 mm Maksutov with a computerized GoTo mount, cost less. Check the live price before buying.
Tube weight, central obstruction, back focus and cool-down guidance. The listing text also carries a stray line of translation-tool residue; the figures above are the ones it states clearly.
On November 7, 2026, Amazon.com listed it at about $734 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.
| Aperture | 100 mm (3.94 in), stated |
|---|---|
| Folded focal length and ratio | 1400 mm (55.1 in) · f/14, the quotient of the two published figures |
| Corrector design | Maksutov-Cassegrain (meniscus corrector), stated |
| Obstruction | Not published by the maker. |
| Back focus | Not published by the maker. |
| Cool-down guidance | Not published by the maker. |
| Tube weight | Not published by the maker. |
| Mount supplied | EQ3 equatorial mount · 25 mm Plössl eyepiece (56x, stated) · 90° star diagonal · smartphone holder |
| Amazon reference | B0967Z38C8 |
| EAN | 4007922071671 |
With the supplied 25 mm Plössl, 56x (1400 / 25). A 10 mm eyepiece would give 140x and a 7 mm 200x, the useful planetary range for a 100 mm aperture on a steady night.
Bresser says so, and for the Moon, planets and double stars it is right: those are bright enough that light pollution matters little. Faint galaxies are a different matter at any aperture.
Its thick corrector and closed tube hold heat. Until the optics reach the outside temperature, warm air inside the tube blurs the image. Thirty to sixty minutes outside before observing is the usual habit.
7.2/ 10
A long, compact planetary optic on a proper equatorial mount, priced on Amazon.com well above what its single eyepiece and thin listing justify.
This model is listed on Amazon.com, at ≈ $734 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.
Moon, planets and double stars from a town, on a mount with real slow-motion controls
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.
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