Seestar vs DWARF: which range, then which model
ZWO's Seestar and DwarfLab's DWARF are the two ranges most people choose between, and they are built on different bets. Seestar uses 2.9 µm pixels for speed per pixel, a filter wheel, and a 60 s EQ ceiling with ZWO's own tilt head. DWARF uses smaller, quieter pixels on the DWARF 3, allows 90 s subs on the mini, and leans on its app for EQ mode with a hydraulic head. The numbers below are the site's model on the same targets; the verdicts are the model's, not a review.
Start with the photograph you want
The tables compare predicted time per pixel. Your choice also depends on framing, resolution, portability and the equipment needed for the chosen sub length. Read-noise assumptions are part of the model, so a predicted speed advantage needs checking against real images.
Model Andromeda on the S50 Pro Model it on the DWARF 3
The S50 Pro specification page, checked on 5 September 2026, lists a 50 mm aperture, 260 mm focal length and 2.9 µm pixels on an OmniVision OS08B10 sensor. Those specifications do not establish a measured integration time. Use the dated price comparison to shortlist, then check today's package and availability at the retailer.
Like for like
| Pair | Faster, suburban sky (Bortle 6) | Faster, rural sky (Bortle 3) | Price | Price |
|---|---|---|---|---|
| Seestar S30 vs DWARF mini | DWARF mini 1.10× | DWARF mini 1.15× | £419 / $399Seestar S30 | £399 / $419DWARF mini |
| Seestar S30 Pro vs DWARF mini | DWARF mini 1.17× | DWARF mini 1.18× | £649 / $699Seestar S30 Pro | £399 / $419DWARF mini |
| Seestar S50 vs DWARF 3 | Seestar S50 1.34× | Seestar S50 1.22× | £539 / $499Seestar S50 | £459 / $549DWARF 3 |
| Seestar S50 Pro vs DWARF 3 | Seestar S50 Pro 1.21× | Seestar S50 Pro 1.09× | £999 / $999Seestar S50 Pro | £459 / $549DWARF 3 |
The Seestar range
| Model | Aperture | Field | ″/px | Longest sub | Read noise | Price |
|---|---|---|---|---|---|---|
| Seestar S50 | 50 mm | 1.3° × 0.7° | 2.39 | 60 s | 1 e⁻ | £539 / $499 |
| Seestar S50 Pro | 50 mm | 2.5° × 1.4° | 2.30 | 60 s | 1 e⁻ | £999 / $999 |
| Seestar S30 | 30 mm | 2.1° × 1.2° | 3.99 | 60 s | 1.2 e⁻ | £419 / $399 |
| Seestar S30 Pro | 30 mm | 4.0° × 2.2° | 3.74 | 60 s | 1 e⁻ | £649 / $699 |
The DWARF range
| Model | Aperture | Field | ″/px | Longest sub | Read noise | Price |
|---|---|---|---|---|---|---|
| DWARF 3 | 35 mm | 2.9° × 1.7° | 2.75 | 60 s | 0.6 e⁻ | £459 / $549 |
| DWARF mini | 30 mm | 2.1° × 1.2° | 3.99 | 90 s | 1.2 e⁻ | £399 / $419 |
| Draco | 90 mm | 1.7° × 1.2° | 1.46 | 300 s | 1.8 e⁻ | £1,299 / $1,399 |
| DWARF II | 24 mm | 3.2° × 1.8° | 2.99 | 15 s | 1.2 e⁻ | — |
How to choose
- Bright suburban sky, mostly nebulae: the ranges are close; both have the dual-band filter built in and Alt-Az stacking that just works. Pick on field of view and price.
- Dark-site trips: the DWARF 3's 0.6 e⁻ read noise and the DWARF mini's 90 s subs are the read-noise winners; the Seestar S50 Pro and S30 Pro answer with 60 s in EQ mode and more pixels.
- Widest field: the Seestar S30 Pro at 4.0° across; the DWARF 3 at 2.9° is the widest DWARF.
- Buying used: the Seestar S50 is out of production and plentiful second-hand; the DWARF II is capped at 15 s subs with no dual-band filter and is worth a lot less than a DWARF mini.
Every pair has its own page with the full timed tables: Seestar S30 vs DWARF mini · Seestar S30 Pro vs DWARF mini · Seestar S50 vs DWARF 3 · Seestar S50 Pro vs DWARF 3. The buying guide puts both ranges beside Vaonis, Unistellar and Celestron.