Vespera Pro 2 vs eQuinox 2: which is faster for deep-sky imaging?

Vaonis Vespera Pro 2 against Unistellar eQuinox 2, 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 eQuinox 2 is 2.4× faster (geometric mean of the solid-image times, each scope on its recommended filter and default subs). From a rural Bortle 3 sky the eQuinox 2 is 1.8× faster.

Field of view. The Vespera Pro 2 shows 1.65° × 1.65° against 0.76° × 0.57°, so big targets such as the Andromeda Galaxy, the North America Nebula and the Pleiades fit with room to spare where the eQuinox 2 needs a mosaic or a tight crop.

Detail. The eQuinox 2 samples at 1.33″ per pixel against 1.68″, so it pulls finer structure from small targets: planetary nebulae, globular cores, galaxy arms.

Subs and dark skies. The Vespera Pro 2 goes up to 30 s subs in Expert Mode, the eQuinox 2 tops out at 4 s. That matters little from a city, where skyglow sets the floor, and a lot from a dark site, where read noise does.

Filters. Neither has a built-in dual-band filter, so emission nebulae from a lit sky are slow going on both.

Specifications side by side

Timed on the same targets

Suburban sky (Bortle 6)

Rural sky (Bortle 3)

Try the Vespera Pro 2 in the calculator Try the eQuinox 2

About the Vaonis Vespera Pro 2

The square-sensor 2026 Vespera with 2 µm pixels. Sharper than the Vespera 3 on small targets and correspondingly slower per pixel; the 12.5 MP square frame suits galaxies and planetaries.

About the Unistellar eQuinox 2

A 114 mm Newtonian with five times the light grasp of a 50 mm refractor. Fixed 4 s subs put it in read-noise territory under dark skies, but the aperture carries it. The published field is 45.6′ × 34.2′, a crop of the sensor.

Other comparisons

All comparisons · Buying guide · Vespera Pro 2 page · eQuinox 2 page