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

DwarfLab Draco 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 Draco is 1.4× 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 1.1× faster, so the ranking flips under dark skies.

Field of view. The Vespera 3 shows 2.60° × 1.46° against 1.66° × 1.24°, so big targets such as the Andromeda Galaxy, the North America Nebula and the Pleiades fit with room to spare where the Draco needs a mosaic or a tight crop.

Detail. The Draco samples at 1.46″ per pixel against 2.44″, so it pulls finer structure from small targets: planetary nebulae, globular cores, galaxy arms.

Subs and dark skies. The Draco goes up to 300 s subs in Pro 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 Draco 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 Draco in the calculator Try the Vespera 3

About the DwarfLab Draco

DwarfLab’s big scope: 90 mm of folded f/3.8 optics, the most aperture of any Seestar or DWARF, a narrow 13 nm dual-band filter and 300 s subs with built-in guiding. A small-target scope; big nebulae need its mosaic mode.

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 · Draco page · Vespera 3 page