ZWO Seestar S50 Pro: Price, Availability and Who Should Buy It

By Alexander Merz · Updated on 6 September 2026 · Details checked on 20 September 2026

The successor: ZWO Seestar S50 Pro Smart Telescope

The real one-for-one successor to the S50: the same 50 mm aperture, but apochromatic quadruplet optics, a much larger sensor and a second wide-angle camera for landscapes and the Milky Way, all in one housing.

Price: € 999

View at Astroshop* →

Not sure you need the bigger model? Our Seestar S30 Pro review shows what the smaller optic delivers.

S50 Pro, S30 Pro or DWARF 3? The decision

The question answers itself once you start from your own situation rather than from the hardware.

The three Seestar models side by side

Two of those numbers matter more than they look. The S30 Pro has the wider field – large targets such as the North America Nebula fit into one frame there, but not in the S50 Pro. The other way round, the S50 Pro gathers almost three times as much light with its 50 mm aperture and shows far more structure in small galaxies.

Affordable entry: ZWO Seestar S30 Pro Smart Telescope

ZWO's benchmark smart telescope: a polished app, mosaic mode and stunning results in minutes.

Price: € 699

View at Astroshop* →

Cheapest alternative: DWARFLAB DWARF 3 Smart Telescope

A 1.3 kg smart telescope: it photographs nebulae and galaxies straight to your phone, even from the city. The simplest way into astrophotography.

Price: € 529

View at Astroshop* →

* Affiliate link: if you buy through this link we may earn a small commission from Astroshop or High Point Scientific, at no extra cost to you.

Seestar S50 Pro: price, delivery date and specifications

The key figures are settled, because the unit is listed and priced in the shop. Everything below comes from the retailer’s data sheet, not from rumours.

* ZWO lab figure: above 10 °C ambient temperature, telephoto camera in alt-azimuth mode during live stacking, app version 3.3.1 or later. On cold nights and with the wide-angle camera the runtime is shorter.

What changes compared with the old S50

The aperture stays at 50 mm, so the unit does not collect more light than before. The progress sits in the optics, the sensor and the second camera.

The biggest practical difference is the second camera. With it the unit also shoots nightscapes and Milky Way panoramas, which otherwise needs a separate camera and lens.

The second, less visible improvement sits in the drive. ZWO fits the Pro with a zero-backlash precision gear. In practice the mount jitters less while tracking and holds steadier in wind. It shows up above all in equatorial mode and during long imaging runs, because fewer sub-frames have to be thrown away.

To stay honest: none of that changes the physics. 50 mm of aperture is and remains too little for planets – Jupiter is still a small disc in the Pro as well.

What a Seestar can do – and what it cannot

A Seestar is a fully automatic compact telescope. Optics, camera, GoTo mount, battery and app control all sit in a housing you can carry in one hand.

The routine is radically simple: set it up, open the app, tap an object. The unit aligns itself, focuses automatically and stacks the frames live into an ever more detailed image.

You see on the display what stays pale even in large telescopes: the Orion Nebula in colour, the Andromeda Galaxy with spiral structure, star-forming regions right across the Milky Way. The built-in filter against light pollution makes that possible even from a city balcony.

For planets a classic instrument remains the better choice – which design suits which budget is covered in our beginner telescope guide. And if you want a broader comparison, Best Smart Telescope 2026 also places Vaonis and Celestron.

Buying a used Seestar S50

Buying a discontinued unit is not a mistake – but it changes the maths. The technology does not age faster just because production ends. What ends is the convenience.

In practice: any remaining warranty hangs on the previous owner’s receipt, a fault in the focuser or mount can become uneconomic to repair for lack of parts, and how long the app keeps supporting the older model is entirely ZWO’s call.

Since the S50 Pro arrived, the benchmark has changed. A used S50 now competes with the new Seestar S50 Pro*Seestar S50 Pro*, which does more and carries a full warranty. So the second-hand price has to sit clearly below $999.00€ 999.

Already have your Seestar S50 Pro? Our Seestar manual walks you from unboxing to the first stacked image and links the official ZWO PDFs.

Frequently asked questions about the Seestar S50 Pro

Can you already buy the Seestar S50 Pro?

Yes. The S50 Pro is on sale and no longer a pre-order. Depending on the retailer and the production batch, it can still take a few weeks from order to dispatch – the current lead time is shown on the retailer's product page*the retailer's product page*.

What does the Seestar S50 Pro cost?

Currently $999.00€ 999. The introductory price expired on 15 September 2026. The price on this page is updated automatically every day.

What is the difference between the Seestar S50 and the S50 Pro?

The aperture stays at 50 mm and the focal length rises slightly to 260 mm. New are the quadruplet optics, the 8.3 MP sensor instead of Full HD, a second 63° wide-angle camera and a dew heater.

Is the step up from the S30 Pro worth it?

If deep sky genuinely matters to you, yes: more aperture, more resolution, more field. If you only want to try it out, the S30 Pro*S30 Pro* at $699.00€ 699 is entirely enough – it is the same app world.

Is the Seestar S50 still in production?

No. Production of the S50 has ended, confirmed by ZWO’s chief in April 2026. Remaining stock still turns up at individual dealers, but you should not plan around it.

Is a used Seestar S50 still worth it?

Only at a clear discount to a new S50 Pro. Factor in that spare parts get scarce on a discontinued unit and that any remaining warranty hangs on the previous owner’s receipt.

Can you observe planets with the Seestar S50 Pro?

Only to a limited extent. The Moon and, with the filter, the Sun are superb, but for Jupiter or Saturn the 260 mm focal length is too short.

Seestar S50 Pro or DWARF 3 – which is better?

The S50 Pro*S50 Pro* gathers considerably more light with its 50 mm and is the more mature astro platform. The DWARF 3*DWARF 3* is lighter, more versatile and much cheaper. For deep sky the Seestar wins, on a small budget the DWARF.

How long does the Seestar S50 Pro battery last?

ZWO states 10,000 mAh and up to 9 hours. That figure comes from the lab: above 10 °C, telephoto camera in alt-azimuth mode during live stacking. On a cold winter night and with the wide-angle camera, expect noticeably less. For comparison, the S30 Pro and the old S50 have 6,000 mAh and around 6 hours.

What is the difference between the Seestar S30 Pro and the S50 Pro?

Two things in the hardware. First the aperture: 50 mm instead of 30 mm gathers almost three times as much light, which shows in small galaxies. Second the drive: the Pro uses a zero-backlash precision gear and therefore tracks more smoothly. In exchange, the S30 Pro has the wider 4.6° field – large nebulae fit into the frame more comfortably.

Conclusion: the wait paid off

Anyone who held out since the S50 was dropped now gets exactly what they waited for: the same class, better optics, a bigger sensor and a second camera on top. The smart telescope field has a clear middle again.

If you want to spend less, the Seestar S30 Pro or the DWARF 3*DWARF 3* ($549.00€ 529) serve you well; both stand side by side in the direct comparison. And if you would rather look through an eyepiece than at a screen, our beginner telescope guide is the better place.

View the Seestar S50 Pro at High Point →View the Seestar S50 Pro at Astroshop →