Instrument class
150–200 mm Schmidt-Cassegrain on a GoTo alt-az
Serious aperture in a tube half a metre long, on a computerised fork. The most capability per unit of storage space, at a price.
| Aperture | 150–203 mm |
|---|---|
| Focal ratio | f/10–f/10 |
| Typical weight | 14 kg |
| Setup time | 15 minutes |
| Learning curve | 3 out of 5 |
| Price band | €900–2400 |
| Useful magnification | 30× to 354× at 177 mm |
What it does well
- 200 mm of aperture in something one person can carry in two pieces
- GoTo plus tracking, which matters at high power and matters more when sharing a view
- Adapts to almost anything — imaging, planetary video, visual
What it costs you
- A 200 mm Dobsonian costs a third as much and shows the same amount
- Long cooling time and a narrow field
- Batteries, hand controllers and alignment stars, every single night
Fit against each goal
The Moon and the planets · 5 out of 5
Aperture, focal length and tracking together — the combination high-power planetary work wants.
Nebulae, clusters and galaxies, by eye · 4 out of 5
Real aperture, though the field is narrow and f/10 makes extended nebulae hard work.
First astrophotography · 3 out of 5
Possible with a reducer and patience; not the easy route.
Taking it with me · 2 out of 5
Compact for its aperture, but it is still a two-case operation.
Models in this class
Indicative European street prices with the date they were observed. Ordered by price. Links marked paid link earn us a commission and cost you nothing extra.
Celestron NexStar 5SE
€950seen 2026-08-17125 mm · 1250 mm focal length · f/10.0 · 12 kg
With a 10 mm eyepiece: 125×, 1.0 mm exit pupil.
Mount Single-arm fork, GoTo alt-az
Eyepieces 25 mm
125 mm rather than the 150 mm this class starts at, and priced as though it were larger. Listed because it is the one people ask about.
Where to buy
- Amazon.frships FR
- Astroshopships DE, FR, EU
- First Light Opticsships GB
- Optique Unterlindenships FR
- Pierro Astroships FR
- Teleskop-Expressships DE, EU
None of these links earn us anything.
Celestron NexStar 8SE
€1750seen 2026-08-17203 mm · 2032 mm focal length · f/10.0 · 15 kg
With a 10 mm eyepiece: 203×, 1.0 mm exit pupil.
Mount Single-arm fork, GoTo alt-az
Eyepieces 25 mm
The single-arm fork is at its limit with this tube; it settles slowly after a nudge at high power.
Where to buy
- Amazon.frships FR
- Astroshopships DE, FR, EU
- First Light Opticsships GB
- Optique Unterlindenships FR
- Pierro Astroships FR
- Teleskop-Expressships DE, EU
None of these links earn us anything.