Telescope Comparison
Unistellar eVscope 2 vs Vaonis Stellina
The price gap is real. The question is whether the extra capability is worth it at your stage.
First light
Unistellar · 114mm · £2,499
The app-native deep-sky imager
- 114mm sensor-based smart telescope — no traditional eyepiece
- Connects to a smartphone app; the app selects, slews to, and stacks targets automatically
- Best for: faint deep-sky objects — galaxies, nebulae, star clusters built up over minutes
- Not for direct eyepiece viewing — every view is delivered on a phone or tablet screen
- 9kg compact all-in-one unit
Vaonis · 80mm · £3,499
The app-native deep-sky imager
- 80mm sensor-based smart telescope — no traditional eyepiece
- Connects to a smartphone app; the app selects, slews to, and stacks targets automatically
- Best for: faint deep-sky objects — galaxies, nebulae, star clusters built up over minutes
- Not for direct eyepiece viewing — every view is delivered on a phone or tablet screen
- 12kg compact all-in-one unit
The full picture
The numbers that separate these two scopes — and what they mean at the eyepiece.
Aperture
Unistellar eVscope 2 gathers 2× more light. On bright targets — Moon, Saturn, Jupiter — you won't notice. On fainter targets — dim galaxies, faint globular clusters — the gap is real.
Focal length
Unistellar eVscope 2's longer focal length reaches higher magnification with the same eyepiece — better reach for planetary detail. Vaonis Stellina's shorter focal length gives a wider true field — better for large open clusters and extended nebulae.
Focal ratio
Focal ratio is not meaningful for smart telescope sensor systems — the optics are optimised for the built-in sensor rather than interchangeable eyepieces.
Mount type
Same mount type — setup experience and ergonomics will be similar. Differences lie in build quality and included accessories.
Weight (OTA)
Unistellar eVscope 2's optical tube is 3.0kg lighter. Relevant if you plan to use it on multiple mounts or carry the tube to dark-sky sites separately.
Optical design
Both sensor-based smart telescopes — no eyepiece, app-controlled, live stacking. The differences are in sensor size, aperture, and companion software quality.
At the eyepiece
| Target | Unistellar eVscope 2 | Vaonis Stellina |
|---|---|---|
| Planets | ||
| Moon | Good 114mm aperture qualifies as Excellent optically, but the digital-only view lacks the sharpness and immediacy of a direct eyepiece; craters and maria are clear but the experience is a screen image rather than a telescope view | Moderate 80mm captures the Moon easily but the short 400mm focal length and imaging-only design produce a small lunar disc with limited fine detail compared to visual or dedicated planetary scopes |
| Saturn | Moderate Rings visible and colour apparent in stacked image, but 450mm focal length and digital rendering limit detail; Cassini Division unlikely | Challenging 400mm focal length and 80mm aperture show a tiny disc with rings identifiable but no Cassini Division or band detail |
| Jupiter | Moderate Main cloud bands visible in stacked view, but short focal length limits magnification and stacking adds little to planetary detail | Challenging Small disc in the wide field — main belts may be faintly visible in stacked images but no fine structure |
| Mars | Challenging Small disc visible at opposition with hints of albedo features; 450mm focal length and 114mm aperture provide insufficient scale for meaningful detail | Not recommended 80mm aperture and 400mm focal length yield only a small orange dot with no meaningful surface detail even at opposition |
Deep sky | ||
| Orion Nebula (M42) | Excellent Fast f/3.95 ratio and live stacking reveal vivid colour and nebula structure within seconds; wide field captures the full extent including the Running Man | Excellent 80mm at f/5 gathers light quickly; wide field captures the full nebula complex with vivid colour after a few minutes of stacking |
| Andromeda Galaxy (M31) | Excellent 450mm focal length frames M31's full extent on the sensor; stacking reveals dust lanes and satellite galaxies M32 and M110 | Excellent 400mm focal length frames the full galaxy extent including companion galaxies; stacking reveals dust lanes and outer halo |
| Open clusters | Excellent 450mm focal length provides a wide field that frames large clusters like the Double Cluster and Pleiades beautifully with colour | Excellent Short focal length provides wide field ideal for the Pleiades, Double Cluster, and similar extended groups |
| Globular clusters | Moderate 114mm aperture shows granular texture but cannot resolve individual stars in the core; stacking helps reveal outer fringe stars | Challenging 80mm cannot resolve individual stars — globulars appear as fuzzy concentrated patches even with extended stacking |
| Faint galaxies | Good Live stacking dramatically extends effective reach beyond what 114mm can show visually; spiral structure in brighter galaxies like M51 becomes visible after several minutes | Moderate Stacking compensates partially for the 80mm aperture, but small and faint galaxies show limited structure and detail |
| Milky Way / wide field | Moderate 450mm focal length and small sensor field of view are too narrow for sweeping Milky Way vistas; individual rich fields are rewarding but panoramic context is lost | Excellent 400mm at f/5 is ideal for rich star fields and large-scale Milky Way structures like the Cygnus region |
Other | ||
| Double stars | Moderate Digital rendering and sensor pixel scale limit the ability to cleanly split close doubles; wide pairs are resolved but this is not the scope's strength | Not recommended No eyepiece for visual splitting; the imaging sensor and short focal length cannot meaningfully resolve close doubles |
| Astrophotography (deep sky) | Moderate GoTo and tracking are integrated and the f/3.95 ratio is fast, but output is processed JPEG only with no raw frame access — limiting for serious post-processing | Good Integrated GoTo and tracking with an f/5 optic delivers solid wide-field deep-sky results, but the closed ecosystem and 80mm aperture limit it versus a dedicated rig |
| Astrophotography (planetary) | Challenging 114mm aperture and 450mm focal length provide insufficient image scale; no video capture mode for traditional lucky imaging | Challenging 80mm aperture and 400mm focal length are far too modest for meaningful planetary imaging detail |
| Solar observation (with official filter) | Good With Unistellar's dedicated solar filter, live stacking reveals sunspot detail and granulation; a unique feature among smart telescopes at this price | Not applicable |
| Emission nebulae (wide-field) | Not applicable | Excellent Fast f/5 optic and wide field excel on large emission targets like the Rosette, North America, and Lagoon Nebulae through extended live stacking |
The real tradeoff
Both scopes are capable. The question is which one fits the way you actually observe.
Unistellar eVscope 2
- You'll spend the first minute doing WiFi setup, then point at the Orion Nebula and see recognisable structure in 20–60 seconds — no polar alignment, no eyepiece swap, no learning curve.
- Your observing sessions reward patience: faint extended objects like the Veil Nebula and M51 spiral structure emerge after a few minutes of live-stacking, revealing detail a smaller traditional scope would miss entirely.
- You'll hit a hard ceiling on planets and the Moon — Saturn's Cassini Division stays hidden, Jupiter's festoons vanish, and the Moon loses the visceral sharpness you'd get from a good eyepiece, because short-focal-length stacking simply doesn't capture planetary detail the way it does nebulae.
Vaonis Stellina
- You'll set up on uneven ground and discover the tripod height is fixed, forcing you to either crouch or crane your neck to view the app screen — convenience stops the moment you're not on level pavement.
- Your observing sessions reward grab-and-go simplicity from light-polluted suburbs: the Orion Nebula and Andromeda Galaxy fill the frame beautifully after a few minutes, and you never need to think about acquisition settings or filters.
- You'll discover the 80mm aperture is noticeably limiting compared to the eVscope 2 — fainter galaxies like M51 and M101 become detectable only after extended stacking, and you've paid £3,499 for aperture that underperforms newer competitors at this price point.
The dark side
Every scope has a personality. Here’s where each one gets difficult.
Unistellar
Unistellar eVscope 2
No eyepiece and no standalone controls — every observation requires the Unistellar app on a smartphone or tablet, with no fallback if the device fails.
The lightweight integrated tripod is vulnerable to wind and cannot be upgraded to a heavier third-party mount without modification.
Planetary and lunar imaging yields limited detail — Saturn's rings lack sharpness, Jupiter's festoon detail is absent, and the Moon renders without the visceral definition of dedicated visual optics, because the f/3.95 short focal length and live-stacking approach do not translate well to these targets.
Vaonis
Vaonis Stellina
80mm aperture is the smallest in the current smart-telescope generation and limits faint-object performance compared to the Unistellar eVscope 2's 114mm — for a higher price (£3,499 vs £2,499).
The fixed-height tripod cannot be adjusted and becomes awkward on uneven ground, forcing you to work around an inflexible setup.
A closed ecosystem with no raw frame access, no filter swaps, and no sensor upgrades — you depend entirely on Vaonis firmware updates and app support for long-term functionality, with no workaround if the company changes direction.
Which is right for you?
Two different buyers. Two different right answers.
The app-native deep-sky imager
Unistellar · Unistellar eVscope 2
You'll love the eVscope 2 if you want the largest aperture and fastest deep-sky results in a fully automated package — you live in suburban or light-polluted skies, you don't care about visual eyepiece observing, and you'll pay extra for larger aperture (114mm) that delivers nebula detail in minutes rather than the smaller Stellina's protracted stacking sessions.
The app-native deep-sky imager
Vaonis · Vaonis Stellina
The Stellina is for you if you prioritise simplicity and don't mind smaller aperture — you're happy sharing quick, polished deep-sky images from the suburbs without learning astrophotography, you accept that faint galaxies require longer stacking, and you value the sealed optical tube over the flexibility of raw frame access.
Our verdict
At £2,499 versus £3,499, the Vaonis Stellina costs 40% more. The extra money buys a more capable mount and better build quality, not larger optics.
For most buyers starting out, the Unistellar eVscope 2 is the sensible choice — put the savings into a better eyepiece. The Vaonis Stellina makes sense once you know exactly why you need what it offers. If I had to choose: the Unistellar eVscope 2, and spend the difference on a quality eyepiece.
Unistellar eVscope 2
View Unistellar eVscope 2 →Vaonis Stellina
View Vaonis Stellina →Deep field: Full specifications
Every data point, for those who want to go further.
Full specifications
Fields highlighted in blue or amber indicate the better value for that spec. Data is manufacturer-stated and may vary.
How much can it see?
| Spec | Unistellar eVscope 2 | Vaonis Stellina |
|---|---|---|
Apertureⓘ The most important spec — bigger = more light = better views | 114mm | 80mm |
Focal Length Longer = more magnification potential | 450mm | 400mm |
Focal Ratio Lower f-number = wider field of view; higher = more magnification per eyepiece | f/3.95 | f/5 |
Optical Design The type of optics — each design has different strengths | Smart Telescope | Smart Telescope |
Coatings Better coatings = more light transmission through the optics | Multi-coated primary reflector optics | Multi-coated apo doublet objective |
How do you point it?
| Spec | Unistellar eVscope 2 | Vaonis Stellina |
|---|---|---|
Mount Type The mechanical system that holds and moves the telescope | Integrated | Integrated |
GoTo Computer-controlled pointing — finds any of thousands of objects automatically | ||
Tracking Motor keeps objects centred as the Earth rotates — essential for astrophotography |
The focuser
| Spec | Unistellar eVscope 2 | Vaonis Stellina |
|---|---|---|
Focuser Size 2" accepts wider eyepieces and gives better low-power views | — | — |
Focuser Type Rack-and-pinion is standard; Crayford and dual-speed are smoother | Motorised electric focuser with auto-focus | Motorised electric focuser with auto-focus |
Size & weight
| Spec | Unistellar eVscope 2 | Vaonis Stellina |
|---|---|---|
OTA Weightⓘ Optical tube only — useful for comparing mount load capacity | 9kg | 12kg |
Total Weightⓘ Full setup including mount — this is what you lug to the car | 9kg | 12kg |
Tube Material | Aluminium alloy | Aluminium alloy with protective enclosure |
What's in the box?
| Spec | Unistellar eVscope 2 | Vaonis Stellina |
|---|---|---|
Diagonal Tilts the eyepiece 90° for comfortable viewing — useful on refractors |
Smart features
| Spec | Unistellar eVscope 2 | Vaonis Stellina |
|---|---|---|
Built-in Camera Records and stacks images automatically — no separate camera needed | ||
App Controlled | ||
WiFi | ||
Battery Included | ||
Sensor | 1/1.7" Sony IMX347 CMOS | 1/1.8" Sony IMX178 CMOS |
Sensor Resolutionⓘ Higher megapixels captures finer detail | 9MP | 6.4MP |
Blue highlight: Unistellar eVscope 2 advantage · Amber highlight: Vaonis Stellina advantage · Greyed cells: equal or subjective.