One model, judged by its numbers
Sky-Watcher Skyliner 200P
The most aperture per euro anyone has yet arranged. A full-size rocker box on the floor, a tube you carry in two trips, and views that stop people mid-sentence.
Family · 150–200 mm Dobsonian
What it shows, really
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.
Under a suburban sky (Bortle 6), through a common 25 mm eyepiece for wide targets and a 10 mm for planets. Every circle is the true field — nothing is enlarged.
The numbers
| Aperture | 200 mm |
|---|---|
| Focal ratio | 1200 mm · f/6.0 |
| Mount | Full-size Dobsonian rocker box |
| Typical weight | 25 kg |
| Eyepieces | 25 mm and 10 mm |
| Useful magnification | 33× to 400× at 200 mm |
| Resolution (Dawes) | 0.6″ — the tightest double star this aperture can split |
| Faintest star, suburban sky | around magnitude 12.8 |
| Observed price | €545 seen 2026-08-17 |
Made for
Nebulae, clusters and galaxies, by eye · 5 out of 5
The classic answer. Aperture is what deep-sky observing is short of, and this is where it stops being expensive.
The Moon and the planets · 4 out of 5
Plenty of resolution. You will be nudging it along by hand every thirty seconds at high power.
Not made for
Sharing it with children · 2 out of 5
The eyepiece height wanders between standing and kneeling as you move around the sky.
Taking it with me · 1 out of 5
It goes in a car and nowhere else.
The family it belongs to: 150–200 mm Dobsonian
What it does well
- Enough aperture that globular clusters resolve into stars rather than staying fuzz
- No mount to align: push it, and it stays where you left it
- Nothing electronic to fail at −2 °C
What it costs you
- Two trips outside, or one heavy one. This is what decides whether it gets used
- The base is bulky in a way the tube is not — storage is the real constraint
- Useless on a balcony: it cannot swing past a railing or reach anything high
Worth knowing about this model
The instrument most experienced observers name when asked what they wish they had bought first. Two trips outside, and worth both.
Prices are observed on the date shown, never live. Links marked paid link earn us a commission and cost you nothing extra.
Where to buy
- Astroshoppaid link€438 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.