Two models, the numbers decide
ZWO Seestar S30 Pro or ZWO Seestar S50 Pro?
ZWO Seestar S30 Pro — 30 mm, €699. ZWO Seestar S50 Pro — 50 mm, €999. The same method as everywhere on this site: the numbers first, the verdict from them.
Same family (Smart telescope (30–80 mm, integrated camera)): what changes between these two is aperture, bulk and price — not character.
Smart telescope (30–80 mm, integrated camera)
€699seen 23 Oct 2026 at Astroshop
Smart telescope (30–80 mm, integrated camera)
€999seen 23 Oct 2026 at Astroshop
Side by side
The ZWO Seestar S50 Pro collects 2.8× more light — that is what aperture buys.
| ZWO Seestar S30 Pro | ZWO Seestar S50 Pro | |
|---|---|---|
| Aperture | 30 mm | 50 mm |
| Focal ratio | 160 mm · f/5.3 | 260 mm · f/5.2 |
| Typical weight | 1.7 kg | 2.8 kg |
| Setup time | 4 minutes | 4 minutes |
| Learning curve | 1 out of 5 | 1 out of 5 |
| Useful magnification | ≤ 60× | ≤ 100× |
| Resolution (Dawes) | 3.9″ | 2.3″ |
| Observed price | €699seen 23 Oct 2026 at Astroshop | €999seen 23 Oct 2026 at Astroshop |
| Where to buy | See it at Astroshop paid link | See it at Astroshop paid link |
Choose the ZWO Seestar S30 Pro if…
- budget decides: €300 less
- it has to be carried: 1 kg lighter
Full page on the Seestar S30 Pro →
Where to buy
Also search at First Light Optics · Optique Unterlinden · Pierro Astro · Teleskop-Express (searches; neither price nor stock checked)
1 of these 5 links earn us a commission, marked above. Sorted by price, never by what pays. How this site is funded.
Price alert
One email when the price we observe for the ZWO Seestar S30 Pro falls at least 5% below the lowest we observed in the previous 30 days. At most one a week.
Choose the ZWO Seestar S50 Pro if…
- you want the most sky: 2.8× the light
Full page on the Seestar S50 Pro →
Where to buy
Also search at First Light Optics · Optique Unterlinden · Pierro Astro · Teleskop-Express (searches; neither price nor stock checked)
1 of these 5 links earn us a commission, marked above. Sorted by price, never by what pays. How this site is funded.
Price alert
One email when the price we observe for the ZWO Seestar S50 Pro falls at least 5% below the lowest we observed in the previous 30 days. At most one a week.
The same sky, through both
Both are smart telescopes: no eyepiece to simulate. They stack photographs; the comparison is the spec sheet, the weight and what each app delivers.
Other duels with these models
Read next
- Seestar, Dwarf or a real telescope?Two activities, not two levels: which one is yours, before the box decides.Updated 24 Sept 2026
- Which telescope should a beginner buy?The short answer, the three things the box does not say, then the detail by budget and by situation.Updated 24 Sept 2026
- Giving a telescopeWhich one to give to whom, at what price, and when the best present is not a telescope.Updated 29 Sept 2026