Seestar S30 Pro Review: The Small Smart Telescope to Buy

The Seestar S30 Pro is ZWO's answer to a simple question: what if the tiny S30 had a proper sensor? It keeps the S30's 30 mm lens and 1.65 kg (3.6 lb) body but swaps the 1080p camera for a 4K Sony IMX585, adds a 4K wide-angle camera, anti-dew control and EQ mode, and costs $699. We compared ZWO's published specs with what hands-on reviewers found. We have not tested it ourselves; see how we research.

Key specs

The box includes a tabletop tripod and a magnetic solar filter. Specs from Seestar's product page, checked October 17, 2026.

Image quality

The headline change is the sensor. The S30 shoots 1920 × 1080; the S30 Pro shoots 3840 × 2160 on a much larger 1/1.2-inch chip, the same sensor family ZWO uses in its standalone ASI585MC astronomy camera. AstroBackyard called it "the best smart telescope I've tested yet" and found the optics "well matched to the sensor", though it noted that star sharpness "can sometimes look a bit soft".

Aperture did not change. At 30 mm it gathers about a third of the light of a 50 mm scope, so faint galaxies need long sessions. T3 found bright targets such as the Orion Nebula appear quickly, while faint galaxies like Bode's Galaxy (M81) "benefit from much longer observations".

Light pollution

The built-in duo-band filter passes the light of glowing hydrogen and oxygen gas and blocks most streetlight glow, which is why small smart telescopes work from cities. ZWO says the S30 Pro "performs very well under light-polluted suburban skies", and T3 found that is where it "really stands out". AstroBackyard imaged from a city backyard with heavy sky glow and reported results consistent with owners in Bortle 7–9 skies on emission nebulae. The filter helps far less on galaxies and star clusters, which shine in all colors.

EQ mode and longer exposures

In normal alt-azimuth mode the S30 Pro takes short exposures and stacks them. Tilt it onto a wedge (EQ mode) and it can take single exposures up to 60 seconds, which reduces field rotation. ZWO says EQ mode needs a compatible head such as the $99 TH10; it cannot be enabled without one. AstroBackyard used 60-second exposures in EQ mode with a success rate "around 90 percent overall". It also found the included tripod "sits quite low" and suggests a sturdier tripod for serious EQ work.

The Moon, Sun and planets

With a 160 mm focal length, planets are small. T3 found Jupiter "small" without surface detail, though its four large moons were visible; the Moon's craters and sunspots on the Sun were "clear and detailed". ZWO's own FAQ says the same: fine for viewing bright planets, not a planetary imaging system.

Day and wide-field shooting

The 4K wide-angle camera adds a Milky Way mode with foreground separation, panorama stitching up to 8K and star trails, which ZWO says are exclusive to the S30 Pro. AstroBackyard found you cannot watch both cameras at once during a deep-sky session ("no true dual-view mode").

What reviewers didn't like

• Wi-Fi range: T3 wished the telescope's own Wi-Fi network reached further, since "even a small backyard can pose problems". ZWO rates it at up to 10 m in the open.
• Storage fills fast: saving FITS frames and video fills 128 GB quickly (AstroBackyard).
• Closed system: no external filters or accessories (ZWO FAQ).
• Updates before you leave home: firmware updates need an internet connection, so check for them before heading to a dark site (T3).

If your S30 Pro won't connect, see our Seestar connection fixes.

Who should buy it

• Buy it if you want the easiest route to good nebula images from a city or suburb, or a scope light enough to fly with.
• Choose the S50 Pro if you want more light-gathering, a longer focal length for the Moon and small galaxies, and a 9-hour battery.
• Choose the DWARF 3 if you want something $150 cheaper with a slightly larger 35 mm lens and a 10,000 mAh battery, and can live with a smaller sensor and buying a tripod separately.