No eyepiece at all — a sensor, a phone and a stack · review
An 80/400 refractor whose built-in sensors report where it is pointing to a free phone app, which then guides the observer to a target with on-screen arrows.
The bottom line The cheapest honest answer to “I cannot find anything”: a plain 80 mm refractor with sensors that turn a phone into a guide rather than a driver.
Eighty millimetres of aperture and four hundred of focal length — f/5. That is a wide, bright, short instrument, which is exactly the right geometry for a telescope aimed by hand: the low-power field is large enough to catch a target that the app puts you merely close to.
Sensors inside the mount measure where the tube is pointing and send that over Bluetooth to a free app. The app draws arrows; you push. Nothing motorised moves, nothing tracks, and no plate-solving happens. It is the least expensive way to remove the beginner’s real obstacle, which has never been optics.
Without them, a mount that reports its position has to be moved carefully. With them, the tube swings freely under the hand and the sensors keep up. That is the difference between a gadget and a usable telescope.
AA cells or USB-C. A cold night flattens a power bank quickly, and a set of alkaline cells in a pocket is the backup that keeps the app alive. It is a small specification and a real one.
German Amazon store sat at about 259 € on the day of the survey.
American, British, French, Italian and Spanish Amazon catalogues hold a record for it that nobody is selling.
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.
| Aperture | Achromatic refractor · 80 mm (maker’s bullet) |
|---|---|
| Sensor | Not published by the maker. |
| Pixel size | Not published by the maker. |
| Field of view | Not published by the maker. |
| Plate-solving | Built-in sensors reporting over Bluetooth to the free PushTo app |
| Tracking | Alt-azimuth with slip clutches for free movement, per the maker |
| Stacking behaviour | Not published by the maker. |
| Battery life | AA cells or USB-C, as the maker states it |
| File export | Not published by the maker. |
| Amazon reference | B0H8QWCS13 (same reference on 6 Amazon marketplaces) |
| EAN | 4007922205380 |
Sensors in the mount report its orientation directly, so nothing has to be photographed and solved. The trade is that the system knows where it points only as accurately as its initial reference, where a camera-based one re-checks against the sky itself.
No. Slip clutches let you swing the tube freely and the app follows along, but the sky drifts and you correct it by hand. What is automated is finding.
Automatic alignment accessory · four-element optics
An accessory that bolts to a computerised Celestron mount and aligns it on the sky automatically in about three minutes, then improves its pointing and assists polar alignment.
Best for: An owner of a computerised Celestron mount who is tired of three-star alignments
≈ $827 / £652 / €792
8 MP sensor · 1.25 in eyepiece fitting · M28.5 × 0.6
An 8 MP electronic eyepiece camera that replaces the eyepiece in a 1.25 in focuser and streams live video to a computer over USB, with an IR-cut filter fitted.
Best for: Lunar and planetary video, and showing a live view to more than one person at once
≈ $80 / €96
12.5 MP square sensor · 50 MP mosaic · apochromatic quadruplet
A self-contained imaging telescope with a Sony IMX676 sensor, an apochromatic flat-field quadruplet objective and an app that stacks exposures across several nights automatically.
Best for: Deep-sky imaging from a balcony or a garden, without a mount, a camera or a laptop
≈ $2990 / £2687 / €2990
