Vaonis
Vaonis Vespera III Smart Telescope
A sleek, fully automated smart telescope that stacks live deep-sky images onto your phone. Vespera III trades the eyepiece for a polished app experience: set it down, pick a target, and watch a nebula build up in color, no setup, no knobs.
79/ 100
Aperture
50mm
Focal Length
245mm
Focal Ratio
f/4.9
Mount Type
Integrated Alt-Az GoTo
Optical Design
Smart Refractor
Weight
5 kg
From$2,490
Lowest in 90 days
Price tracked by PolarisObserved 41 timesTracking since May 2026
Where to buy
Verified 2h ago · prices tracked daily
01What it's good at
What it's best at — and the trade-offs.
Best at
✓It automates everything: pointing, focusing, tracking and live-stacking, controlled entirely from a phone.
✓A compact, weather-resistant body sets up in under a minute with no alignment.
✓Live stacking reveals color and faint detail that no small eyepiece scope can show.
✓The app framing and mosaic mode make wide targets like large nebulae accessible.
Trade-offs
!The experience lives on a screen, so there is no through-the-eyepiece view.
!Small aperture and short focal length mean planets stay tiny; it is a deep-sky imager.
!You depend on the app and its target catalog and updates.
!Battery life and Wi-Fi range set a limit on unattended sessions.
02In plain English
What These Numbers Mean
Aperture
61 mm
Two and a half inches, roughly 50 percent more light than the Vespera II. That translates into cleaner images in the same session time and a longer list of targets that come out well.
Focal length
340 mm
Slightly longer than the Vespera II, giving more scale on galaxies and compact nebulae while still framing the large showpieces. The mosaic mode extends the field when a target needs more room.
Focal ratio
f/5.6
Fast enough for short stacked frames, which is what keeps the live image building quickly. Speed and stacking together substitute for the aperture a traditional telescope would need.
Optical design
Sealed smart refractor with built-in camera
An apochromatic lens with a fixed sensor and no eyepiece, processed on board. There is nothing to focus and nothing to collimate, and the session happens entirely on a screen.
Weight
~5.2 kg complete
Around 11.5 lb with the integrated mount, packing into a shoulder bag. It is a telescope you can decide to use twenty minutes before dark.
Mount
Integrated alt-azimuth GoTo
Self-levelling, self-aligning and self-tracking, driven entirely from the app. Alt-azimuth tracking means many short exposures rather than long ones, which the onboard processing is built around.
02The Polaris Score
How it scores, and why.
79/ 100
Vaonis Vespera III Smart Telescope
Performance78
Ease of use93
Portability90
Upgrade potential38
Polaris weighs optical capability, how easy the scope is to live with, how portable it is, and how far it takes you before you outgrow it — not list price or brand.
03Who it's for
An honest fit check.
Buy it if you
✓People who want images, not eyepiece time
✓Beginners and families who want zero setup
✓Light-polluted city and suburban imagers
Look elsewhere if you
!Visual observers who want to look through an eyepiece (there isn't one)
!Planetary and lunar detail chasers (the short, small optic favors wide deep sky)
!Tinkerers who want to control every capture parameter
05The numbers
Full specifications.
Optics
Optical DesignSmart Refractor
Aperture50mm
Focal Length245mm
Focal Ratiof/4.9
Mount & drive
Mount TypeIntegrated Alt-Az GoTo
Physical
Weight5 kg
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