Astronomy Specialist


$899.00 AUD



Apochromatic triplet

50 mm


250 mm

136.1 FPS


5.6 x 3.2 mm

2.9 µm

3 kg

The Seestar S50 is a smart telescope unlike any other on the market, integrating ZWO's renowned astronomy technology into a simple to use, all-in-one instrument. 

Featuring built-in ASIAIR intelligent controller, EAF electronic autofocuser, GOTO mount, dew heater, astronomical camera and filter switcher, plus a high quality tripod, the Seestar S50 is a truly capable imaging instrument at an incredible price. The Seestar S50 features apochromatic triplet optics with high quality coatings, resulting in excellent control of chromatic aberration, unlike other smart telescopes which typically feature cheap achromatic doublets.

The Seestar S50 includes a narrow dual-band filter which cuts through light pollution and isolates the H-alpha and OIII emission lines of nebulae. Also included is a high quality white-light clip-on solar filter, allowing you to capture detailed images of sunspots.

The entire telescope can be controlled over Wi-Fi or Bluetooth with a mobile device. Built-in levelling sensors plus your phone's GPS makes setup quick and painless, and automatic alignment and GOTO using platesolving makes finding targets as simple as clicking a button. The integrated autofocuser takes the hassle out of focusing, ensuring your images are totally sharp every time.

The Seestar app features a comprehensive list of deep sky objects, with recommendations for tonight's best picks and detailed information about each target. Like the standalone ASIAIR, the Seestar provides comprehensive control over your imaging session without the need to be an astrophotography expert.

Optical design Triplet apochromatic lens
50 mm
Focal length
250 mm
Focal ratio f/5
Imaging sensor
Sony IMX462
1920 x 1080
64 GB
Mount design Alt-azimuth
Slew rate 20 - 1440 x
Weight 2.5 kg
Size 142 x 130 x 257 mm
Battery life 6 hours
Operating temperature / humidity 0 - 40 deg C (recommended)
Wi-Fi 5 GHz / 2.4 GHz
Connectivity Wi-Fi, Bluetooth, USB-C
Zero position Mechanical
Tripod connection 3/8"-20
Power input USB Type-C

Eta Carina by Andrew Gunton using the Seestar S50 and post-processed with external software.

The Trifid Nebula by Andrew Gunton using the Seestar S50 and post-processed with external software.

Customer Reviews

Based on 5 reviews
Jake P
Big bang for your buck!

I’ve only ever used really small and basic telescopes or binoculars before, but I’d been looking to purchase a telescope for a while, I couldn’t decide what kind of style to buy or how much to spend. I wanted something which had a “goto” mount and that could get me into astrophotography as well. Learning about recently released smart telescopes, they appeared to have everything I wanted at a reasonable price point. While ~$900 isn’t cheap by any means, I didn’t want to spend thousands on something that might just end up sitting in the cupboard.

Reading about the Seestar S50 I was impressed by it’s features, “goto” mount, auto focus, easy alignment, triplet optics, dual band filter AND solar filter, this seemed like the obvious choice. It really is packed with features at a solid price point.

My order arrived quickly from Testar, I was able to get the telescope set up and imaging very quickly. The included carbon fibre tripod is light and sturdy, it feels very well made, the included case is also very good. Being day time, my first target was the sun, it was glorious to see the sun up close, observing the sunspots, I was very impressed. I spent some more time playing with the features of the telescope in “scenery” mode and found the zoom to be quite impressive although the sensor quality wasn’t excellent. *Note, I used to using DSLR with lenses up to 400mm, so my expectations here might be a little high.

Luckily, that night I had clear skies so I was able to set the telescope and start viewing the heavens. I found the results out of the Seestar S50 to be incredibly impressive. Some galaxies and nebulae are immediately visible just on the preview screen in the app, even though they are not visible to the naked eye. Once the image stacking and enhancement begin, the photos really come in to their own, even though I had seen some sample images before I was still not prepared for how impressive the unprocessed images would be straight out of the Seestar. On my first night I was in awe of images of M42 (Orion Nebula), B33 (Horsehead Nebula) and 30 Doradus (Tarantula Nebula), DSO viewing is clearly the standout feature of the Seestar S50.

While the Seestar S50 does not have the magnification for good planetary viewing, I was still able to see Jupiter (with some red cloud banding visible) and 4 moons.
The software (phone app) is very good, I had to hunt around for one or two functions here and there, but I was able to use all features intuitively without having to refer to the help guide at all.

Excellent DSO viewing with impressive images
Impressive optics
Accurate goto mount, tracking and auto focus
Solar viewing
Very good software with regular updates and added features and inbuilt image stacking
Easy to set up and use
Top quality tripod included
Being able to view images remotely and not be out in the cold while observing (see cons)

Image sensor quality, I would be willing to pay more for high resolution and quality sensor, I believe this is the Seestar S50’s weakest point.
Insufficient zoom for planetary viewing.
No included charger/power adaptor (a USB cable is provided for charging), could be an issue for some users.
Only being able to view images remotely and being able to view celestial objects directly through an eyepiece, see users may have a strong preference for direct viewing.
If the Seestar app become unavailable in the future the telescope hardware will be rendered useless.

Overall, I was very impressed, the Seestar S50 is a fully featured smart telescope at a very strong price point, for me the choice was a no-brainer. If DSO imaging interests you and you can afford the ~$900, I say go for it! I would love to see a planetary capable smart telescope from Seestar, if we see a Seestar S100 in the future with 100mm aperature, upgraded sensor with standard and telephoto lenses there is no doubt I’ll be purchasing it!

I hope this review has helped you.

Mike Kane

This little unit is a great addition to my Astro Photography equipment. It is a great grab and go scope and it performs really well. It will not replace my main astro photography rigs, but it definitely has a place.

David Szabo
Amazing first scope

I am beyond impressed with the Seestar S50, it suits my needs perfectly. I needed scope to use for EAA stuff with the kids but also something that can produce decent quality shots and video.

The software in incredibly good for a Chinese manufacturer and the updates are adding additional features consistently.

Well worth the buy if you are after something simple to setup and capture very good images imo.


Fantastic product and the service is outstanding. Highly recommend.

Ann Cairns
SeeStar delivers

As an active member of an astronomy society (Sydney City Skywatchers) who loves doing outreach events, I was looking for a scope that would be quick a fool-proof to use at event. The SeeStar delivers and allowed me to show deep sky objects rarely seen in light polluted areas. When the Moon and Saturn were too high or blocked by the landscape we were able to find fun and colourful objects for the public to view on a hazy, partly cloudy night at Luna Park…between a brightly lit building and the ferris wheel the glow on the left is the ferris wheel! My husband and I are looking forward to trying out some of the more advanced features with fellow amateur astronomers from our club.



$899.00 AUD

Optical design

Apochromatic triplet

Image circle

Focal ratio



50 mm

Focal length

250 mm

Optical thickness



Colour or Mono

Pixel size

2.9 µm

Sensor dimensions

5.6 x 3.2 mm


1936 x 1096

Sensor diagonal

6.46 mm

Quantum efficiency


Read noise

0.5 e-

Fullwell capacity

12,000 e-

Bit depth



136.1 FPS

Camera backfocus

12.5 mm

Filter size

Filter size

Bandpass (FWHM)

Bandpass (FWHM)

Glass thickness

Mount type


Payload capacity

Latitude range

Dovetail saddle

Slew speed


Periodic error correction

Counterweight shaft

Azimuth adjustment range

Internal diameter

Illuminated diameter

Compatible telescope external diameter


3 kg




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