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The Seestar S50 has been replaced by the Seestar S50 Pro
ZWO has discontinued the original Seestar S50, and we don't expect any more units. Its successor, the Seestar S50 Pro, keeps the same 50mm aperture and adds a 4K dual-lens camera system, better optics and a battery that lasts all night. If you want something lighter and less expensive, the Seestar S30 Pro is the smart telescope we recommend most to beginners.
Seestar S50 vs. S50 Pro vs. S30 Pro
| Seestar S50 (discontinued) | Seestar S50 Pro | Seestar S30 Pro | |
|---|---|---|---|
| Aperture | 50mm | 50mm | 30mm |
| Focal length | 250mm (f/5) | 260mm (f/5.2) | 160mm (f/5.3) |
| Optics | Triplet apochromat | 4-element apochromat with ED glass | 4-element apochromat with ED glass |
| Main camera | Full HD (1920 × 1080), Sony IMX462 | 4K (3840 × 2160), 1/1.2" OmniVision OS08B10 | 4K (3840 × 2160), 1/1.2" Sony IMX585 |
| Wide-angle camera | No | Yes, 4K, 63° field | Yes, 4K, 63° field |
| Telephoto field of view | About 1.3° × 0.7° | 2.8° | 4.6° |
| Built-in filters | UV/IR cut, dual-band light pollution, dark field | UV/IR cut, dual-band light pollution, dark field | UV/IR cut, dual-band light pollution, dark field |
| Battery | 6,000mAh (about 6 hours) | 10,000mAh (up to 9 hours) | 6,000mAh (about 6 hours) |
| Storage | 64 GB | 128 GB | 128 GB |
| Weight | 2.5 kg (5.5 lb) | 2.8 kg (6.2 lb) | 1.65 kg (3.6 lb) |
| Best for | — | Smaller, fainter galaxies and the most detail | Large nebulae, the Milky Way, travel and the lowest price |
Which one should I choose?
Choose the S50 Pro if you loved the idea of the S50: it has the same 50mm aperture for detail on galaxies, planets and the Moon, plus a 4K sensor, a wide-angle camera for Milky Way shots, double the storage and up to 9 hours of battery life.
Choose the S30 Pro if you want the lightest, most affordable Seestar. Its wider field of view frames large nebulae like the Orion and North America Nebulae in a single shot, and it's easy to travel with.
Both support Equatorial Mode with the Seestar TH10 on a full-height tripod, Plan mode, and ASCOM Alpaca for software like N.I.N.A. Not sure? Browse all our smart telescopes or give us a call.
Already own a Seestar S50?
We still carry S50 accessories, including the 2-inch filter adapter, dew shield with Bahtinov mask, metal lens cap and the Seestar Fluid Head with Tripod for Equatorial Mode. Thinking about upgrading? We buy and trade in recent smart telescopes; see sell us your used gear.
The original Seestar S50 product information and manuals follow below for reference.
The Seestar S50 is a perfect blend of telescope and camera, providing exceptional experiences for astronomy and landscape observations.
It serves as an ideal companion for exploring the marvels of the universe, whether you're indoors or outdoors.
Wirelessly connect via Bluetooth or Wi-Fi. Seamlessly connect wirelessly through Bluetooth or Wi-Fi.
Stay powered up by recharging it with a cell-phone power bank while in use. Get up to 6 hours of battery life per charge.
White Light Solar Filters
The S50 solar filter features a metal-coated outer surface and an absorbing material within the substrate.
Built-in Duo-band Filters
Enhance the quality of your captures with the Seestar S50's duo-band light pollution filter, reducing the impact of urban light pollution and moonlight.
Specifications
| Product model | Seestar S50 |
| Sensor | IMX462 |
| Resolution | 1920 x 1080 |
| Aperture | 50 mm |
| Focal ratio | f/5 |
| Focal length | 250 mm |
| Optical lens | Apochromatic triplet |
| Storage | 64 GB |
| Transmission Mode | Wi-Fi 5G & 2.4G / USB Type-C / Bluetooth 5.0 |
| Working temperature | 0~40 ℃ (Recommended) |
| Mount type | Alt-azimuth |
| Slew rate | 1X - 1440X |
| Zero position | Mechanical |
| Battery capacity | 6000 mAh |
| Connection port | 3/8“-20“ |
| Net weight | 2.5 kg |
| Size | 142.5 x 130 x 257 |
| Power input | Type-C |
| Wi-Fi reset | Support |
| Working distance | 30m ~ ∞ |
| Working distance | ≤ 10m |
| Bluetooth range | ≤ 5m |
| Manufacturer's Warranty | 1 year |
* All test results of the transmission ranges above are carried out in open spaces without blocks.
Seestar S50 User Manual
Seestar S50 Quick Guide
Seestar S50 Safety Guidelines