DWARF 3 vs Vespera 3: which is faster for deep-sky imaging?

DwarfLab DWARF 3 against Vaonis Vespera 3, on the same targets from the same skies, using the same photon-budget model as the rest of the site. Times are for a solid image; the calculator gives quick-look and showpiece figures too.

Speed. Across the 30 most popular targets from a suburban Bortle 6 sky, the Vespera 3 is 1.1× faster (geometric mean of the solid-image times, each scope on its recommended filter and default subs). From a rural Bortle 3 sky the Vespera 3 is 1.4× faster.

Field of view. The DWARF 3 shows 2.93° × 1.65° against 2.60° × 1.46°, so big targets such as the Andromeda Galaxy, the North America Nebula and the Pleiades fit with room to spare where the Vespera 3 needs a mosaic or a tight crop.

Detail. The Vespera 3 samples at 2.44″ per pixel against 2.75″, so it pulls finer structure from small targets: planetary nebulae, globular cores, galaxy arms.

Subs and dark skies. The DWARF 3 goes up to 60 s subs in EQ mode, the Vespera 3 tops out at 30 s. That matters little from a city, where skyglow sets the floor, and a lot from a dark site, where read noise does.

Filters. The DWARF 3 has a dual-band filter built in; the Vespera 3 does not, which costs it heavily on emission nebulae from any suburban sky.

Specifications side by side

Timed on the same targets

Suburban sky (Bortle 6)

Rural sky (Bortle 3)

Try the DWARF 3 in the calculator Try the Vespera 3

About the DwarfLab DWARF 3

Small pixels on a 35 mm f/4.3 lens give a sharper image than its aperture suggests, and EQ mode with 60 s subs makes it the read-noise winner in dark skies.

About the Vaonis Vespera 3

The 2026 Vespera: same 50 mm quadruplet class as the II on an 8 MP IMX585, with a 24 MP mosaic mode and 11 hours of battery. Per pixel it behaves like a Seestar S50 Pro without the built-in dual-band filter.

Other comparisons

All comparisons · Buying guide · DWARF 3 page · Vespera 3 page