What a night with it looks like
The S30 is the small sibling of the S50: same app, same automatic GoTo and tracking, same live stacking. Its 150 mm focal length gives a 2.46° telephoto field, wide enough for the whole Andromeda Galaxy or the Pleiades in one frame, and the second camera covers 23.2° for constellations and the Milky Way. For a first season, that wide field is forgiving: targets are easy to frame and tracking errors show less.
With 30 mm of aperture, it gathers about a third of the light of a 50 mm telescope. In practice that means longer stacking for the same result, which the app handles for you; you just leave it running.
The catch
Our computed image scale is about 4″ per pixel, the coarsest in the list with the DWARF mini and S30 Pro. Small galaxies turn into smudges, and planets are dots with a hint of shape. ZWO also does not state a battery runtime on the US page, only 6,000 mAh.
Availability is the other problem. The S30 was shown sold out on the Seestar US store, and a popup on that store invites visitors to sign up for a coming "Seestar S30 Plus". If you are not in a hurry, it may be worth waiting to see what that brings.
How it scores
Seestar S30 gets 8.3/10 (good) with our overall weights. Each criterion below is scored out of 10 from ZWO's published figures; a criterion without a figure is left out and the other weights are rescaled. The scales are on the methodology page.
| Criterion | Weight | Score /10 | Bar |
|---|---|---|---|
| Aperture | 27.8% | 3.0 | |
| Sensor resolution | 11.1% | 3.1 | |
| Image scale (detail) | 11.1% | 4.0 | |
| Light pollution filter | 11.1% | 10.0 | |
| Battery life | 10% (left out) | Not stated | |
| Portability (weight) | 11.1% | 8.9 | |
| Tracking mode | 5.6% | 10.0 | |
| Warranty | 5.6% | 7.0 | |
| Price | 16.7% | 9.0 |
By use, with the same figures and different weights: for beginners 8.7/10 (No. 4), portable smart telescope 9.0/10 (No. 1), under $1,000 8.3/10 (No. 5).
Full specifications
As published by ZWO on its US pages, read on November 9, 2026.
| Optical design | Apochromatic refractor (3 elements, ED glass) |
|---|---|
| Aperture | 30 mm (1.2 in) |
| Focal length | 150 mm, f/5 |
| Main sensor | Sony IMX662 |
| Resolution | 1080 × 1920 |
| Field of view | 2.46° (telephoto) |
| Image scale | 4.02″ per pixel (computed from the stated 2.46° field (frame diagonal) and 1080 × 1920 frame) |
| Wide-angle camera | Yes |
| Filters | UV/IR-cut, duo-band filter (OIII 30 nm / Hα 20 nm) and dark filter built in; magnetic solar filter |
| Mount and tracking | Alt-azimuth mount that supports Equatorial Mode |
| Focus | Autofocus |
| Eyepiece | No, view on phone or tablet |
| Battery | 6,000 mAh (runtime not stated on the US product page) |
| Storage | 64 GB |
| Weight | 1.65 kg (3.6 lb), telescope |
| Tripod in the box | Not stated on the US product page |
| In the box | Not listed in text on the US product page |
| Warranty | 2 years on the main body and camera, battery 1 year (Seestar US warranty policy) |
| Checked price | $399 on November 9, 2026 |
| Availability | Shown as sold out on the Seestar US store on November 9, 2026 |
Buying advice
Listed at $399, sold out on the Seestar US store on November 9, 2026. At the same budget, the DWARF mini at $419 was in stock, with 90-second exposures and an 840 g body.
- 30 mm apochromatic triplet and 150 mm focal length in a 1.65 kg body, according to ZWO
- Second wide-angle camera with a 23.2° field
- Duo-band light pollution filter built in
Alternatives to consider
DWARFLAB DWARF mini8.2Good · out of 10$419, in stock, lighter, 90 s exposures.
ZWO Seestar S30 Pro8.5Very good · out of 104K cameras and anti-dew control for $699.
ZWO Seestar S508.6Very good · out of 1050 mm of aperture for $549.
Head-to-heads
Questions about the Seestar S30
Seestar S30 or S50 for a beginner?
The S30 is cheaper ($399 vs $549), lighter (1.65 vs 2.5 kg) and has a wide-angle camera; the S50 has 50 mm of aperture, which means more detail on smaller targets. Our S30 vs S50 head-to-head lays out every line.
Is the Seestar S30 discontinued?
ZWO does not say so. On November 9, 2026, the S30 was still listed on the Seestar US store at $399 but shown as sold out, and the store was promoting a coming S30 Plus. We keep it in our rankings because it is still sold by retailers.
Sources
Official pages read on November 9, 2026: us.seestar.com/products/seestar-s30-all-in-one-smart-telescope · us.seestar.com/pages/warranty-policy. Product images: ZWO Seestar.