Buy the DwarfLab Dwarf 3 at $529 to $599 (529 to 599 € in Europe) for almost every use, and consider the Vaonis Vespera III at $2,490 (2,490 € in Europe) only for aperture and endurance. The criterion that actually decides is that both carry the same 8.3 MP resolution, so the extra $1,891 buys 50 mm against 35 mm, 11 h of battery and a bigger mosaic, nothing else.
The 20-second verdict
Buy the DwarfLab Dwarf 3 if you want the best field-versus-resolution compromise in its price bracket: 8.3 MP over 2.93° × 1.65°, three switchable filters including Hα/OIII dual-band, a solar filter, 128 GB of storage and 1.3 kg on the scale. The tripod is not supplied, so the real budget always exceeds the sticker price.
Buy the Vaonis Vespera III if you want 50 mm of aperture, 245 mm of focal length, 11 h of battery, CovalENS mosaics at 24 MP and a 5-year warranty, and if 5.0 kg is acceptable. One essential caveat: no independent test has been published since the 11 April 2026 release, so everything here comes from manufacturer specifications rather than measured field results.
Side by side
| Spec | DwarfLab Dwarf 3 | Vaonis Vespera III |
|---|---|---|
| Indicative price | $529 to $599 (529 to 599 € in Europe) | $2,490 (2,490 € in Europe) |
| Aperture | 35 mm | 50 mm |
| Focal length | 150 mm (737 mm equivalent) | 245 mm |
| Focal ratio | f/4.3 | f/4.9 |
| Sensor | Sony IMX678 (Starvis 2) | Sony IMX585 |
| Resolution | 8.3 MP | 8.3 MP |
| Field of view | 2.93° × 1.65° | 2.5° × 1.4° |
| Mount | Motorised alt-azimuth | Motorised alt-azimuth |
| Equatorial mode | Yes, up to 60 s exposures, EQ tripod not included | No, alt-azimuth only |
| Built-in filters | 3 switchable filters: VIS, Astro, Hα/OIII dual-band, solar included | None, solar, dual-band and CLS sold as options |
| Mosaic | Yes, 2×2 panorama | Yes, CovalENS at 24 MP, up to 4.33° × 2.43° |
| Battery life | 5.5 h | 11 h |
| Storage | 128 GB (eMMC) | 115 GB (eMMC) |
| Weight | 1.3 kg | 5.0 kg |
| Tripod included | No | Yes |
What actually separates them
Optics and light gathering
50 mm against 35 mm is roughly twice the collecting area, and the Vespera III’s apochromatic quadruplet should correct better across the field than the Dwarf 3’s dual-lens arrangement, though no independent measurement confirms that yet. The Dwarf 3 works marginally faster at f/4.3 against f/4.9, which recovers a little of the gap but does not close it. On faint targets, aperture is the only currency that counts. Winner on optics and light gathering: the Vespera III.
Sensor, resolution and field
Both deliver 8.3 MP, the Dwarf 3 on a Starvis 2 generation IMX678 and the Vespera III on a Sony IMX585. Resolution is a straight tie, which is remarkable given the price gap. On native field the Dwarf 3 is actually wider at 2.93° × 1.65° against 2.5° × 1.4°. The Vespera III takes the lead only in mosaic, where CovalENS reaches 4.33° × 2.43° at 24 MP against a simple 2×2 panorama. Winner on sensor, resolution and field: the Dwarf 3 natively, the Vespera III once you use mosaic mode.
Battery, weight and portability
11 h against 5.5 h is exactly double, and it is the Vespera III’s most tangible advantage: a full winter night without a power bank. The Dwarf 3 answers with 1.3 kg against 5.0 kg, nearly four times lighter, plus 128 GB against 115 GB and IP54 sealing. The Vespera III includes a tripod while the Dwarf 3 does not, which narrows the packed-weight gap slightly but nowhere near enough. Winner on battery, weight and portability: the Dwarf 3, because 3.7 kg saved outweighs 5.5 h gained for anyone who carries their kit.
Filters, software and real cost
The Dwarf 3 has three switchable filters built in, VIS, Astro and Hα/OIII dual-band, with a solar filter supplied. The Vespera III has none: solar, dual-band and CLS are all optional, so its real cost climbs beyond $2,490 for emission nebulae or solar work. Neither charges a subscription. The Dwarf 3 is not innocent on hidden cost either, since it ships without a tripod and its EQ mode needs an equatorial tripod on top, with a polar alignment that is not very intuitive. Even so, the totals are not close. Winner on filters and real cost: the Dwarf 3.
Which one for your use case
For beginners
The Vespera III arrives ready to use with its tripod, which is a real advantage, but it is a $2,490 purchase made on specifications alone with no published independent test. The Dwarf 3 costs a quarter as much and needs a tripod you can buy anywhere. Winner for beginners: the Dwarf 3. Cheaper still, the ZWO Seestar S30 at $399 (399 € in Europe) arrives complete.
For large nebulae
2.93° × 1.65° beats 2.5° × 1.4° in a single frame, but CovalENS reaches 4.33° × 2.43° at 24 MP where the Dwarf 3 offers a 2×2 panorama. If you routinely shoot the widest targets, the mosaic engine matters more. Winner for large nebulae: the Vespera III.
For small targets and galaxies
Same pixel count, so aperture and focal length decide: 50 mm at 245 mm against 35 mm at a 737 mm equivalent. The Dwarf 3 gives more image scale, the Vespera III gathers the photons that make faint detail appear at all. Winner for small targets and galaxies: the Vespera III, on light gathering.
For city skies
The Dwarf 3 has a dual-band filter built in and switchable from the app. The Vespera III has no filter at all until you buy one, which is an odd omission at this price. Winner for city skies: the Dwarf 3.
For travel
1.3 kg with IP54 sealing against 5.0 kg. Add a light tripod to the Dwarf 3 and it is still a fraction of the Vespera III’s bulk. Winner for travel: the Dwarf 3, without hesitation.
Frequently asked questions
Is the Vespera III worth four times the price of a Dwarf 3?
Only for aperture, endurance and mosaic. Both sensors deliver 8.3 MP, and the Dwarf 3 is natively wider. The Vespera III buys you 50 mm against 35 mm, 11 h of battery, CovalENS at 24 MP and a 5-year warranty.
Has the Vespera III been independently tested?
No. No independent test has been published since its release on 11 April 2026, so treat any comparison of it as a specification comparison, not a measured result.
Does the Dwarf 3 come with a tripod?
No. None is supplied, and EQ mode additionally requires an equatorial tripod, so the real budget always exceeds the $529 to $599 sticker. The Vespera III does include a tripod.
Which is better under light pollution?
The Dwarf 3, because its Hα/OIII dual-band filter is built in. The Vespera III requires an optional dual-band or CLS filter before it competes.
What else should I compare?
Look at the ZWO Seestar S50 and the Vaonis Vespera II at $1,590, or browse all comparisons.