Two models, the numbers decide
Sky-Watcher Skymax 127 AZ-GTi or Sky-Watcher Skyliner 150P Classic?
Sky-Watcher Skymax 127 AZ-GTi — 127 mm, €720. Sky-Watcher Skyliner 150P Classic — 150 mm, €357. The same method as everywhere on this site: the numbers first, the verdict from them.
Side by side
The Sky-Watcher Skyliner 150P Classic collects 1.4× more light — that is what aperture buys.
| Sky-Watcher Skymax 127 AZ-GTi | Sky-Watcher Skyliner 150P Classic | |
|---|---|---|
| Aperture | 127 mm | 150 mm |
| Focal ratio | 1500 mm · f/11.8 | 1200 mm · f/8.0 |
| Typical weight | 8.5 kg | 18 kg |
| Setup time | 12 minutes | 8 minutes |
| Learning curve | 3 out of 5 | 2 out of 5 |
| Useful magnification | ≤ 254× | ≤ 300× |
| Resolution (Dawes) | 0.9″ | 0.8″ |
| Observed price | €720 (seen 2026-08-17) | €357 (seen 2026-08-23) |
The same sky, through both
These circles are simulations, computed from the aperture, the magnification and the sky — indicative, not exact. A real night also depends on the turbulence, your eyes and your experience. Closer to the truth than the photo on the box; still not a promise.
The Moon
Saturn
The Orion Nebula
The Andromeda Galaxy
Goal by goal
The family scores the advisor uses, out of 5 — a property of each family, not marketing.
| Skymax 127 AZ-GTi | Skyliner 150P Classic | |
|---|---|---|
| The Moon and the planets | 5/5 | 4/5 |
| Taking it with me | 3/5 | 1/5 |
| The Sun | 3/5 | — |
| Nebulae, clusters and galaxies, by eye | 2/5 | 5/5 |
| Learn my way around the sky | 1/5 | 3/5 |
Choose the Sky-Watcher Skymax 127 AZ-GTi if…
- it has to be carried: 10 kg lighter
Full page on the Skymax 127 AZ-GTi →
Where to buy
- Astroshoppaid link€709 seen 2026-08-23ships DE, FR, EU
- Amazon.frships FR
- First Light Opticsships GB
- Optique Unterlindenships FR
- Pierro Astroships FR
- Teleskop-Expressships DE, EU
1 of these 6 links earn us a commission, marked above. Sorted by price, never by what pays. How this site is funded.
Choose the Sky-Watcher Skyliner 150P Classic if…
- budget decides: €363 less
- you want the most sky: 1.4× the light
- the first nights should stay simple: gentler learning curve
Full page on the Skyliner 150P Classic →
Where to buy
- Astroshoppaid link€357 seen 2026-08-23ships DE, FR, EU
- Amazon.frships FR
- First Light Opticsships GB
- Optique Unterlindenships FR
- Pierro Astroships FR
- Teleskop-Expressships DE, EU
1 of these 6 links earn us a commission, marked above. Sorted by price, never by what pays. How this site is funded.