A long focal length folded into a short tube · review
Sarblue's upgraded Mak60: a 60 mm Maksutov-Cassegrain with 750 mm of focal length in a 200 mm plastic tube, on a full-size tripod with a finder scope, a 20 mm eyepiece and a phone mount.
Sarblue describes this as an upgrade of its first Mak60: the same 60 mm Maksutov-Cassegrain, now on a full-size tripod with a finder scope. The tabletop version is here.
The folded design fits 750 mm of focal length into a 200 mm tube, which is f/12.5. Long ratios give sharp, high-power views with simple eyepieces: the supplied 20 mm gives 37.5x.
At 37.5x the field of view is under a degree and a half. The Moon is easy to find through the main tube; a planet or a double star is not. The finder makes those findable.
Sarblue’s own words: “Despite the plastic tube, the optics are high quality.” It is unusual for a listing to state the material at all. A plastic tube is lighter and less rigid than metal; on a 60 mm telescope that matters little.
The top lid detaches to show the internal structure, pitched as an educational feature. Keep fingers off the mirrors.
On November 7, 2026, Amazon.com had no seller offering it; Keepa recorded new offers around $127 over the previous six months. The button opens the live listing.
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.
| Aperture | 60 mm (2.36 in), stated |
|---|---|
| Folded focal length and ratio | 750 mm (29.5 in) · f/12.5, the quotient of the two published figures |
| Corrector design | Maksutov-Cassegrain · fully multi-coated optics, 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 · 200 mm (7.87 in) tube length · plastic tube, stated |
| Mount supplied | Full-size adjustable tripod · finder scope · 20 mm eyepiece (37.5x, stated) · universal phone mount · detachable lid showing the inside |
| Amazon reference | B0936FPHL8 |
| EAN | 0727380313031 |
At 750 mm and 37.5x, the field of view is less than a degree and a half wide. Finding the Moon is easy; finding Saturn without a finder is not. A finder with a wide view points the tube at the target first.
The 20 mm eyepiece gives 37.5x (750 / 20). A 60 mm aperture is useful to about 120x, so a 6 to 8 mm eyepiece would show Saturn's rings and Jupiter's moons clearly.
Sarblue designs it as a teaching feature: the lid comes off to show the mirrors and the folded light path. The listing warns not to touch the mirrors.
This model is listed on Amazon.com, with no price read 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 first telescope that has to stand on its own tripod and be aimed with a finder
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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