ZWO Seestar S30 Pro
ZWO's compact refractor pairs dual cameras with built-in filters
At a glance
Clear night6.9 out of 10
The Seestar S30 Pro combines a 30 mm aperture with two camera fields of view, built-in filters and a maker-stated 6-hour battery life. Its 1.65 kg weight makes it lighter to carry out than most of the telescopes compared, while its aperture gathers less light than most.
Five scores, from 1 to 10
- Light graspaperture, against every scope listed here1.9
- Field of viewhow much sky fits in one frame9.6
- Portabilitycarry weight, without the tripod7.9
- Easebattery, autofocus, dew heater, light pollution handling8
Mean score 6.9 out of 10
The sums behind these figures are set out on how scores work. With no figure from the maker, a row stays empty.
Compared with Unistellar
Unistellar Odyssey
£2,099Price at Unistellar's UK shop, 23 October 2026
| Spec | ZWO Seestar S30 Pro | Unistellar Odyssey |
|---|---|---|
| Aperture | 30 mm | 85 mm |
| Weight | 1.65 kg | 4 kg |
| Focal length | 160 mm | 320 mm |
Filters and imaging
The built-in light pollution filter includes OIII at 30 nm and Ha at 20 nm, giving your town-sky imaging a filter set aimed at emission nebulae. The S30 Pro also has a UV/IR-cut filter and a dark-field filter, with the filter options built into the instrument rather than separate accessories.
The Sony IMX585 telephoto sensor and Sony IMX586 wide-angle sensor are rated at 8.3 MP. For your garden setup, that means the Seestar combines a narrower telephoto view with a separate wide-angle camera, rather than relying on one camera for both jobs.
Image resolution is 2160 x 3840 pixels, with the same stated resolution applying to the camera output. The Seestar app controls the smart telescope, which combines its camera and refractor in a single app-operated instrument.
The maker quotes a field of view of 4.6° for the telephoto camera and 63° for the wide-angle camera. The wide-angle camera takes in a broader area of your sky, while the telephoto field provides the tighter framing.
Optics and mount
The 30 mm (1.2 in) aperture is the refractor's light-gathering opening, and gathers less light than most telescopes compared. For your observing plans, that makes aperture a key point to weigh against the convenience of the dual-camera arrangement.
The 160 mm focal length and f/5.3 focal ratio describe the refractor's optical configuration. Together with the two camera fields, they place the S30 Pro's emphasis on compact, app-controlled imaging rather than a long focal length.
The alt-azimuth mount also offers an equatorial mode. Field rotation can affect long exposures on an alt-azimuth mount, while the equatorial mode gives you a second tracking option for imaging.
See it at Seestar (ZWO)ZWO Seestar S30 Pro, £649, Typical UK retail price, 23 October 2026
Power, storage and carrying
The maker states a battery life of 6 hours, so the quoted figure sets the session length before you need to plan around recharging. Its internal storage is 128 GB, providing space on the instrument for image files.
The maker quotes a weight of 1.65 kg, making the Seestar lighter to carry out than most telescopes compared, with the tripod excluded from that carrying figure. For a garden observing spot, its stated weight is the relevant measure when moving the instrument between storage and setup.
Comparison ranking
Light grasp: lower than most of the telescopes compared (the 30 mm aperture gathers less light than most).
Field: wider than most of the telescopes compared (the ranking uses the main camera's longer field dimension).
Portability: lighter to carry than most of the telescopes compared (the ranking uses weight carried, with the tripod excluded).
Ease: around the middle of the telescopes compared (the ranking averages battery life and the hands-off features named for this category).
Specifications
| Optical design | Refractor |
|---|---|
| Aperture | 30 mm (1.2 in) |
| Focal length | 160 mm |
| Focal ratio | f/5.3 |
| Sensor | Sony IMX585 (telephoto); Sony IMX586 (wide), 8.3 MP |
| Pixel size | not stated by the maker |
| Image size | 2160 × 3840 px |
| Field of view | Tele: 4.6°; Wide: 63° |
| Limiting magnitude (maker's figure) | not stated by the maker |
| Mount | Alt-azimuth, with an equatorial mode |
| Electronic eyepiece | not stated by the maker |
| Filters built in | UV/IR-cut, astronomical light pollution OIII 30 nm / Ha 20 nm, dark field |
| Autofocus | not stated by the maker |
| Battery life (maker's figure) | 6 h |
| Weight | 1.65 kg |
| Storage | 128 GB |
| Dew heater | not stated by the maker |
| Weather rating | not stated by the maker |
| App | Seestar app |
Source: the maker's own specification sheet. Where it says "not stated by the maker", the maker has not given that figure so far.
Versions
Typical UK retail price, 23 October 2026. Each row leads to that version at the shop.
Strengths and limits
- The maker states a 4.6° telephoto field of view and a 63° wide-angle field of view; the latter frames a wider patch of sky than most of the telescopes compared.
- The maker states a 1.65 kg weight, lighter to carry out than most of the telescopes compared, with the tripod excluded from the carry comparison.
- The maker lists 128 GB of storage, a 6-hour battery life and built-in UV/IR-cut, OIII 30 nm, Ha 20 nm and dark-field filters.
- The 30 mm (1.2 in) aperture gathers less light than most of the telescopes compared.
Who it suits, and which skies
For first nightsFor town skiesGrab and go
A good match if you want a compact smart telescope, value a wide-angle camera alongside a telephoto camera, or want built-in filters and 128 GB of storage.
Less so if you prioritise a larger aperture or want a telescope with a stated weight below 1.65 kg.
Bundles and prices for each version sit in the table above; the current line-up is on the shop's own page.
Questions about the ZWO Seestar S30 Pro
- How heavy is it to carry out?
- The maker states a weight of 1.65 kg; the carry comparison excludes the tripod and places it lighter to carry out than most of the telescopes compared.
- What does the app-controlled setup include?
- The maker lists the Seestar app and an alt-azimuth mount with an equatorial mode. The stated image resolution is 2160 x 3840 pixels.
- Could its built-in filters help under a city sky?
- The maker lists an astronomical light pollution filter, OIII 30 nm and Ha 20 nm filters, plus UV/IR-cut and dark-field filters. The maker states a 6-hour battery life.
- What are the two camera fields of view?
- The maker states a 4.6° field of view for the telephoto camera and 63° for the wide-angle camera.
Photos
Last light
The maker lists a Sony IMX585 telephoto image sensor and a Sony IMX586 wide image sensor, with 8.3 MP image resolution of 2160 x 3840 pixels. Its 4.6° telephoto field of view and 63° wide-angle field of view offer distinct framing options, alongside an alt-azimuth mount with an equatorial mode. The 30 mm aperture is modest against most of the telescopes compared, but the listed filters, 128 GB storage and 6-hour battery life make the specification set feature-rich.
See it at Seestar (ZWO)£649, Typical UK retail price, 23 October 2026
Field notes that mention it
Nearby in the sky: similar scopes
- ZWO Seestar S3030 mm, 1.65 kg, £419
- DwarfLab Dwarf mini30 mm, 0.84 kg, from £399
- DwarfLab Dwarf 335 mm, 1.35 kg, 3°, from £459
- ZWO Seestar S50 Pro50 mm, 2.8 kg, Tele: 2.8° (Portrait); Wide: 63° (Portrait), £999