Telescope Comparison
Celestron NexStar 6SE vs Celestron NexStar Evolution 6
The specs are close. The experience isn't.
First light
Celestron · 150mm · £999
The automated deep-sky platform
- 150mm schmidt-cassegrain on a computerised mount with motorised tracking
- Good for: Moon, planets, bright nebulae, star clusters, and deep-sky objects
- GoTo system finds any object in its database after initial star alignment — no star atlas needed
- Tracking motors keep objects centred as Earth rotates — useful above 100×, essential for photography
- 11.5kg total — requires a fixed garden spot or car transport
Celestron · 150mm · £1,299
The automated deep-sky platform
- 150mm schmidt-cassegrain on a computerised mount with motorised tracking
- Good for: Moon, planets, bright nebulae, star clusters, and deep-sky objects
- GoTo system finds any object in its database after initial star alignment — no star atlas needed
- Tracking motors keep objects centred as Earth rotates — useful above 100×, essential for photography
- 12.5kg total — requires a fixed garden spot or car transport
The full picture
The numbers that separate these two scopes — and what they mean at the eyepiece.
Aperture
Equal light-gathering. Aperture won't settle this comparison — the mount, focal ratio, and observing experience are what differ.
Focal length
Same focal length — identical magnification with any given eyepiece. Differences come from optical design and coatings.
Focal ratio
Same focal ratio — the same eyepiece gives equivalent magnification and true field in both scopes.
Mount type
Same mount type — setup experience and ergonomics will be similar. Differences lie in build quality and included accessories.
Weight (OTA)
Similar optical tube weight. Any portability difference between these setups comes from the mount, not the tube itself.
Optical design
Both Schmidt-Cassegrain designs — versatile, compact, good for planets and deep-sky. Differences come from aperture and mount.
At the eyepiece
| Target | Celestron NexStar 6SE | Celestron NexStar Evolution 6 |
|---|---|---|
| Planets | ||
| Moon | Excellent 150mm aperture and f/10 focal ratio reward high magnification — craterlets, rilles, and sharp terminator shadows are all accessible | Excellent 150mm aperture at f/10 delivers superb high-magnification lunar detail — rilles, crater chains, and mountain shadows are crisp |
| Saturn | Excellent 150mm and 1500mm focal length put Cassini Division, ring shadow, and disc banding within reach in steady seeing | Excellent 150mm aperture and 1500mm focal length resolve the Cassini Division and subtle cloud banding in good seeing |
| Jupiter | Excellent Multiple cloud belts, Great Red Spot, and moon shadow transits visible; 1500mm focal length gives a generously sized disc | Excellent Multiple cloud belts, GRS, and moon shadow transits visible at 150–250x |
| Mars | Good Polar cap and major dark albedo features visible at opposition; 150mm is below the 200mm threshold for truly detailed Mars observation | Good 150mm aperture shows dark albedo features and polar cap at opposition; surface detail improves with a red filter |
Deep sky | ||
| Orion Nebula (M42) | Good Bright nebulosity and Trapezium are impressive, but the 1500mm focal length crops the full extent of the nebula; f/10 doesn't favour wide-field context | Good Core and trapezium resolved well, but 1500mm focal length crops the full nebula extent |
| Andromeda Galaxy (M31) | Moderate 1500mm focal length frames only the bright core — the outer halo and full disc extend well beyond the field even with a wide eyepiece | Moderate 1500mm focal length shows only the bright core — the outer halo and companion galaxies overfill the field |
| Open clusters | Moderate Larger clusters like the Pleiades and Double Cluster overfill the field; works better on compact clusters like M35 or M11 | Moderate Narrow field crops large clusters like the Pleiades; compact clusters like M11 fare better |
| Globular clusters | Good M13 and M5 show granular texture with partial star resolution at the edges; 150mm is below the threshold for full resolution across the cluster | Good 150mm resolves outer stars in M13 and M92; cores remain granular but impressive |
| Faint galaxies | Good 150mm gathers enough light to show structure in brighter galaxies like M51 and M104; fainter targets appear as dim smudges | Good 150mm gathers enough light for M51, M81/M82, and other Messier galaxies as soft glows with some structure hints |
| Milky Way / wide field | Not recommended 1500mm focal length gives far too narrow a field for sweeping Milky Way views — this scope is the opposite of a wide-field instrument | Not recommended 1500mm focal length is far too narrow for sweeping star fields — field of view under 1° |
Other | ||
| Double stars | Excellent 150mm aperture and f/10 focal ratio produce clean Airy discs — excellent for splitting close pairs and showing colour contrast | Excellent 150mm aperture at f/10 cleanly splits sub-arcsecond pairs; diffraction-limited performance rewards tight doubles |
| Astrophotography (deep sky) | Moderate Alt-az GoTo mount causes field rotation limiting exposures to a few seconds; usable for EAA and short-exposure stacking but not long-exposure imaging | Moderate Alt-az GoTo mount limits exposures to ~15–30 seconds before field rotation becomes apparent; bright targets only |
| Astrophotography (planetary) | Good 1500mm focal length and tracking mount suit lucky-imaging with a planetary camera; 150mm aperture gives solid detail but falls short of 200mm+ scopes | Good 150mm at 1500mm focal length with GoTo tracking is well suited to lucky imaging with a planetary camera |
The real tradeoff
Both scopes are capable. The question is which one fits the way you actually observe.
Celestron NexStar 6SE
- You'll set up with the hand controller, punch in your alignment stars, and be observing in a few minutes — it's a well-understood, reliable workflow, but you'll need to bring a power tank or mains adapter because there's no built-in battery.
- You'll save roughly £300 over the Evolution 6 and get essentially the same optical performance at the eyepiece — the views of Saturn's Cassini Division, Jupiter's belts, and resolved stars in M13 are identical because the optics are the same 150mm f/10 SCT.
- You'll notice the single-arm fork mount vibrates for 2–3 seconds every time you touch the focuser — at 200x on Jupiter, that means waiting out the wobble after every adjustment, which gets old on a long planetary session.
Celestron NexStar Evolution 6
- You'll align and control the scope from your phone, tapping targets in the Celestron app instead of scrolling through menus on a hand controller — on a cold night, keeping your hands in your pockets between slews genuinely changes how relaxed the session feels.
- You'll show up with no power cables and no battery pack because the rechargeable battery is built in and lasts around 10 hours — your setup footprint is just the tripod, scope, and your phone.
- You're paying a £300 premium over the 6SE for WiFi control and the built-in battery — the views through the eyepiece are identical, so if you're comfortable with a hand controller and an external power source, that premium buys you convenience rather than capability.
The dark side
Every scope has a personality. Here’s where each one gets difficult.
Celestron
Celestron NexStar 6SE
The single-arm fork mount transmits vibrations after focusing — expect 2–3 seconds of wobble at high magnification every time you adjust, which is especially irritating when fine-tuning planetary focus.
No 2-inch visual back is included, so your maximum true field of view with the stock 1.25-inch back and 25mm Plössl is only about 0.8° — you'll need to buy the adapter separately to use wider-field eyepieces.
The enclosed SCT tube needs 30–45 minutes of cool-down in cold weather; until thermal equilibrium is reached, you'll see shimmering, mushy planetary images caused by internal tube currents.
Celestron
Celestron NexStar Evolution 6
The alt-az GoTo mount produces field rotation on longer exposures — even at roughly 15–30 seconds, star trailing becomes visible, so serious deep-sky astrophotography is off the table.
The built-in rechargeable battery takes several hours to fully charge via USB, so if you forget to charge it the night before, you're stuck waiting or hunting for a mains outlet in the field.
At approximately 13 kg assembled, this is not a casual grab-and-go setup — you'll feel the weight carrying it to the car, and it needs a stable surface and a few minutes of alignment before you can observe.
Which is right for you?
Two different buyers. Two different right answers.
The automated deep-sky platform
Celestron · Celestron NexStar 6SE
You'll love the 6SE if you want the same 6-inch SCT planetary and compact deep-sky performance but don't want to pay extra for wireless control you may not need. If you already own a power tank, don't mind a hand controller, and would rather put the £300 savings toward better eyepieces or a camera, this is the pragmatic choice. This isn't for you if wide-field views are your priority — the 1500mm focal length means the Pleiades and full extent of M31 simply won't fit — or if you need long-exposure deep-sky imaging, because the alt-az mount limits you to a few seconds at best.
The automated deep-sky platform
Celestron · Celestron NexStar Evolution 6
You'll love the Evolution 6 if cable clutter and hand controllers feel like relics of the past — aligning via your phone and carrying no external battery genuinely streamlines your setup, especially if you observe from a balcony or travel light. If you host friends at the eyepiece and want the slickest 'tap a target, scope slews' experience, this delivers it. This isn't for you if you're on a budget and prioritise optical performance per pound — the views are identical to the £300-cheaper 6SE — or if you want to sweep wide-field Milky Way star fields, because the narrow 1500mm focal length can't be solved by WiFi.
Our verdict
Same aperture, same light-gathering, £300 price difference. The extra cost of the Celestron NexStar Evolution 6 buys a different mount — not better optics.
For most beginners, the Celestron NexStar 6SE is the right starting point — the optics are identical and the savings are better spent on a quality eyepiece or a dark-sky trip. The Celestron NexStar Evolution 6 makes sense if the mount it comes with is specifically what you want to learn. If I had to choose: the Celestron NexStar 6SE — same sky, less money.
Celestron NexStar 6SE
View Celestron NexStar 6SE →Celestron NexStar Evolution 6
View Celestron NexStar Evolution 6 →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 | Celestron NexStar 6SE | Celestron NexStar Evolution 6 |
|---|---|---|
Aperture The most important spec — bigger = more light = better views | 150mm | 150mm |
Focal Length Longer = more magnification potential | 1500mm | 1500mm |
Focal Ratio Lower f-number = wider field of view; higher = more magnification per eyepiece | f/10 | f/10 |
Optical Design The type of optics — each design has different strengths | Schmidt-Cassegrain | Schmidt-Cassegrain |
Coatings Better coatings = more light transmission through the optics | StarBright XLT fully multi-coated on all optical surfaces | StarBright XLT fully multi-coated on all optical surfaces |
How do you point it?
| Spec | Celestron NexStar 6SE | Celestron NexStar Evolution 6 |
|---|---|---|
Mount Type The mechanical system that holds and moves the telescope | GoTo (Computerised) | GoTo (Computerised) |
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 | Celestron NexStar 6SE | Celestron NexStar Evolution 6 |
|---|---|---|
Focuser Size 2" accepts wider eyepieces and gives better low-power views | 1.25" | 1.25" |
Focuser Type Rack-and-pinion is standard; Crayford and dual-speed are smoother | SCT rear-cell focuser | SCT rear-cell focuser |
Size & weight
| Spec | Celestron NexStar 6SE | Celestron NexStar Evolution 6 |
|---|---|---|
OTA Weight Optical tube only — useful for comparing mount load capacity | 3.5kg | 3.5kg |
Total Weightⓘ Full setup including mount — this is what you lug to the car | 11.5kg | 12.5kg |
Tube Length | 394mm | 394mm |
Tube Material | Aluminium | Aluminium |
What's in the box?
| Spec | Celestron NexStar 6SE | Celestron NexStar Evolution 6 |
|---|---|---|
Eyepieces Included eyepieces — more is better, but quality matters more than quantity | 25mm Plössl | 25mm Plössl |
Finder Scope Helps you locate areas of the sky before switching to the main eyepiece | StarPointer red dot finder | StarPointer red dot finder |
Diagonal Tilts the eyepiece 90° for comfortable viewing — useful on refractors |
Smart features
| Spec | Celestron NexStar 6SE | Celestron NexStar Evolution 6 |
|---|---|---|
Built-in Camera Records and stacks images automatically — no separate camera needed | ||
App Controlled | ||
WiFi | ||
Battery Included |
Blue highlight: Celestron NexStar 6SE advantage · Amber highlight: Celestron NexStar Evolution 6 advantage · Greyed cells: equal or subjective.