One axis against the turning sky — once it is aligned · review
A small equatorial tracking head built on an open-source design and an ESP32-S dual-core controller, offering sidereal, lunar and custom rates from a USB-C power bank.
The bottom line An inventive open-source tracking head sold as a component, with the one number that would size it left out.
A motorised equatorial head with a 38 mm quick-release plate underneath and a 1/4 in screw on top. No tripod, no ball head, no camera. The maker also states that the adapter bush between the 1/4 in shaft and a typical 3/8 in ball head base is a separate purchase — an honest note that saves a wasted first night.
An ESP32-S dual core on an open-source scheme, offering sidereal rate, lunar rate and a user-defined rate, with a switch between hemispheres. No application is needed: it runs when it is powered. For time-lapse work the custom rate is the feature that matters.
USB-C, with no internal cell. In cold weather that is an advantage — a flat power bank is replaced in seconds, where a built-in battery ends the session.
Payload. Every tracker is defined by how much it will carry and still track smoothly, and this listing never says. Until it is known, the safe approach is a light body and a short lens.
German and French Amazon stores ran from 109 € to 117 € on the day of the survey.
British, Italian and Spanish Amazon catalogues hold a record for it that nobody is selling.
American Amazon store gave no result whatever, so the buy button there opens a search rather than an empty page.
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 17 September 2026. The live price is at the top of the page.
| Payload rating | Absent from this listing |
|---|---|
| Periodic error | Not published by the maker. |
| Drive | ESP32-S dual core, on an open-source design per the maker · Sidereal, lunar and a custom rate |
| Control | Switchable between northern and southern |
| Polar alignment provision | Not published by the maker. |
| Counterweight supply | Not published by the maker. |
| Tripod | Not published by the maker. |
| Heaviest single piece | Not published by the maker. |
| Supplied optics | Not published by the maker. |
| Amazon reference | B0GLGT4HCK (same reference on 5 Amazon marketplaces) |
| EAN | 0684646830292 |
A tripod, a ball head, the 1/4-to-3/8 bush, a camera and a shutter release. The maker states each of those omissions, which is more candid than most listings in this family.
A tracker keeps a camera on the sky by turning slowly against its weight. Without a published capacity there is no way to know whether a given lens will track smoothly or drag the mechanism out of rate.
102 mm · 460 mm focal length · EQ-3 mount · objective solar filter supplied
A 102/460 telescope on an EQ-3 equatorial mount, supplied with an objective solar filter for white-light observation, a 2 in focuser with a 1.25 in reducer and a smartphone adapter.
Best for: Wide-field night use with a daytime solar option, on a mount that can carry both
≈ £255 / €249
114 mm mirror · 900 mm focal length · EQ-1 mount
A complete 114/900 Newtonian on an EQ-1 equatorial mount with two-axis slow motion, supplied with two eyepieces, a 6x30 finder and a 2x Barlow.
Best for: A first equatorial telescope for the Moon and planets
≈ $399 / €239
114 mm mirror · 1000 mm focal length · EQ-3 mount · 1.25 in focuser
A 114/1000 Newtonian on an EQ-3 equatorial mount with a rack-and-pinion 1.25 in focuser, sold with an accessory pack and described by the maker as motor-upgradable.
Best for: A first equatorial set with room to add a drive motor later
≈ €150
