ZWO · Smart Telescope
ZWO Seestar S50
Point, tap, and image the night sky with no experience required, all in a 3kg package under $500.
Price updated Mar 28, 2026
Performance Scores
Overview
The ZWO Seestar S50 is a fully automated smart telescope designed to remove the technical barriers that stop most beginners from actually using their equipment. With a 50mm apochromatic refractor at f/5 and a 250mm focal length, it is not a powerhouse for resolving fine planetary detail, but it performs genuinely well on nebulae, galaxies, and star clusters when used with its built-in live stacking system. You control everything through a smartphone app, which handles alignment, GoTo slewing, tracking, and automatic image stacking without any manual input from you.
The Alt-Az mount keeps the footprint small and the weight at just 3kg, making it realistic to carry to a dark site. The apochromatic design keeps chromatic aberration controlled, which matters when you are stacking multiple exposures and color fringing would otherwise compound. The tradeoff is aperture: 50mm gathers limited light, so faint targets require patience and good conditions.
For someone who wants a reliable, portable system that produces real astrophotography results on the first night out, without collimation, polar alignment, or a separate camera setup, the Seestar S50 is a serious option.
At a Glance
50mm
Aperture
f/5
Focal Ratio
2.5kg
Weight
250mm
Focal Length
Specifications
Key Features
- Built-in live stacking produces shareable astrophotos without any separate software or camera
- Apochromatic optics reduce color fringing, improving image quality during multi-frame stacking sessions
- Smartphone app handles all alignment, tracking, and GoTo targeting automatically
- At 3kg and a compact form factor, it travels easily to darker skies
- Alt-Az GoTo mount is accurate enough for automated target acquisition on deep-sky objects
- 50mm aperture is a real limitation on faint or small targets, best managed by extending session length under dark skies
- At $499, it undercuts most comparable smart telescope options while delivering a complete, ready-to-use system
Featured in Our Guides
Recommended Eyepieces
For planets
All-rounder
Customer Reviews
317 reviews
This telescope is mind blowing! So easy to get started and take amazing photos right away. The attached photos were taken within half an hour of setting this up.
Such an incredible tool, and so easy to use. You can be doing amazing astrophotography within literally minutes of opening the package. Some feedback for ZWO: 1. The EQ wedge is flimsy - you’re trying to adapt a designed for small cameras to a heavy, constantly-moving scope. Use a sturdy wedfe inste...
A game changer in astrophotography! No more setting up a "Go-To" German Equatorial powered tripod, Apochromatic refractor, digital camera and laptop. It took 30 minutes from unpacking the box to taking deep sky photos! This Seestar Telescope is perfect for beginners. This will not out-perform seriou...