telescopecomparison · 2-way
ZWO Seestar S50 vs DwarfLab Dwarf 3
Key differences
+67% focal length
+43% aperture
Slower by 0.7 f-stops
Specifications
| Specification | ZWO Seestar S50 | DwarfLab Dwarf 3 |
|---|---|---|
| Optics | ||
| Type | smart-telescope | smart-telescope |
| Optical design | Apo triplet all-in-one | Apo doublet all-in-one |
| Aperture | 50mm | 35mm |
| Focal length | 250mm | 150mm |
| Native f/ratio | f/5.0 | f/4.3 |
| Image circle | — | — |
| Full-frame support | No | No |
| Physical | ||
| Weight | 2.5kg | 1.3kg |
Advantages of ZWO Seestar S50
- Tighter framing — 250mm vs 150mm focal length
- 43% more light-gathering aperture
Advantages of DwarfLab Dwarf 3
- Wider field — 150mm vs 250mm focal length
- Faster optics at f/4.3 vs f/5
- Lighter (1.3kg vs 2.5kg) — easier to travel with
Best for — ZWO Seestar S50
- Wide-field nebulae and Milky Way regions
- Fast imaging — short exposures per sub
Best for — DwarfLab Dwarf 3
- Wide-field nebulae and Milky Way regions
- Fast imaging — short exposures per sub
ZWO Seestar S50 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 8.25° × 5.50°Scale: 3.10"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 5.39° × 3.60°Scale: 3.10"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 2.59° × 2.59°Scale: 3.10"/px
DwarfLab Dwarf 3 — typical FOV & scale
- With Full-frame (36×24mm, 3.76µm)FOV: 13.75° × 9.17°Scale: 5.17"/px
- With APS-C (23.5×15.7mm, 3.76µm)FOV: 8.98° × 6.00°Scale: 5.17"/px
- With IMX533 square (11.3×11.3mm, 3.76µm)FOV: 4.32° × 4.32°Scale: 5.17"/px
ZWO Seestar S50 — recommended user
Best suited for beginners and wide-field enthusiasts running a portable travel rig.
DwarfLab Dwarf 3 — recommended user
Best suited for beginners and wide-field enthusiasts running a portable travel rig.