Telescope Comparison
Sky-Watcher Quattro 150P vs Sky-Watcher Skyliner 150P
The Sky-Watcher Skyliner 150P is a complete setup. The Sky-Watcher Quattro 150P needs a mount before it's usable.
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First light
Sky-Watcher · 150mm · £399
The custom-rig optical tube
- 150mm newtonian reflector — optical tube only, no mount included
- 750mm focal length at f/5
- Requires a compatible mount before you can observe anything
- Best for: observers who already own a suitable mount or are building a specific imaging rig
- Not a complete purchase — budget at least £100–300 extra for a mount before observing
Sky-Watcher · 150mm · £229
The maximum-aperture visual reflector
- 150mm Newtonian on a floor-standing Dobsonian alt-az rocker box
- Good for: full visual programme — planets, Moon, globular clusters, galaxies, nebulae
- No alignment required — set up and observe in under 10 minutes
- No motorised tracking — targets drift at high magnification as Earth rotates
- 13kg total — designed for a fixed garden or regular dark-sky site, not casual transport
The full picture
The numbers that separate these two scopes — and what they mean at the eyepiece.
Aperture
Effectively equal light-gathering. Aperture won't settle this comparison — the mount, focal ratio, and observing experience are what differ.
Focal length
Sky-Watcher Skyliner 150P's longer focal length reaches higher magnification with the same eyepiece — better reach for planetary detail. Sky-Watcher Quattro 150P's shorter focal length gives a wider true field — better for large open clusters and extended nebulae.
Focal ratio
Sky-Watcher Quattro 150P's faster f/5 delivers wider fields with any eyepiece — better for open clusters and large nebulae. Sky-Watcher Skyliner 150P's f/8 provides more magnification per eyepiece — better for fine planetary detail.
Mount type
Sky-Watcher Quattro 150P has no mount — add a compatible mount before you can observe. Sky-Watcher Skyliner 150P is a complete ready-to-use system.
Weight (OTA)
Sky-Watcher Quattro 150P's optical tube is 2.2kg lighter. Relevant if you plan to use it on multiple mounts or carry the tube to dark-sky sites separately.
Optical design
Sky-Watcher Quattro 150P is a Newtonian reflector (mirrors, needs occasional collimation); Sky-Watcher Skyliner 150P is a DOBSONIAN. Different optical formulas produce different strengths — reflectors give more aperture per pound; refractors give sharper contrast and require no collimation.
At the eyepiece
Both scopes · same aperture
Both are 150mm Newtonian reflectors — light gathering is identical. What you see through each depends on your eyepieces, your sky, and the steadiness of the atmosphere, not which scope you bought. Saturn's rings separate clearly from the disk; in good seeing, the Cassini Division — the dark gap between the A and B rings — is a genuine target at moderate magnification. Jupiter shows two equatorial cloud bands reliably, four Galilean moons changing position night to night. The Orion Nebula (M42) shows real nebulosity around the Trapezium, which splits into four stars at moderate magnification. The Andromeda Galaxy (M31) fills a wide-field eyepiece, the bright core distinct from the outer halo. What separates these scopes is the mount, the setup experience, and where you can use them — not what you see through them.
The real tradeoff
Both scopes are capable. The question is which one fits the way you actually observe.
Sky-Watcher Quattro 150P
- You'll spend your observing sessions tethered to a laptop or tablet, watching your sensor stack frames rather than looking through an eyepiece — this scope only truly rewards you once your camera is attached.
- You'll chase wide-field targets: the full sprawl of Andromeda, the Veil Nebula complex, the Heart and Soul — anything that demands a large canvas benefits from your short focal length and fast f/5 ratio.
- You'll accept that setup is complex and expensive; the OTA is only the beginning — you'll budget separately for a mount, coma corrector, guidescope, and filters before your first photon hits the sensor.
Sky-Watcher Skyliner 150P
- You'll stand at the eyepiece for the entire night, manually tracking targets by hand, rediscovering them every minute or so at high power — but you'll be genuinely observing, not monitoring a computer screen.
- You'll gravitate toward the Moon and planets: Saturn's rings snapping into focus, Jupiter's cloud bands resolving, lunar craters revealing their three-dimensional structure — details that demand magnification and a stable, patient platform.
- You'll unbox a complete, ready-to-observe telescope for £229, clip in an eyepiece, and start learning the night sky within minutes, with no mount selection, polar alignment, or accessory rabbit hole to navigate.
The dark side
Every scope has a personality. Here’s where each one gets difficult.
Sky-Watcher
Sky-Watcher Quattro 150P
Arrives as an OTA only — mount, coma corrector, and essential imaging accessories will cost several times the telescope's purchase price.
Fast f/5 focal ratio produces uncorrected coma at field edges without a dedicated coma corrector, making this non-optional for any serious imaging.
Requires frequent collimation and demands precision at f/5; a laser collimator is strongly recommended, adding further cost and complexity.
150mm aperture and 750mm focal length severely limit planetary image scale — you'll need a Barlow or entirely different scope to compete with dedicated planetary imagers.
Ships with no finder scope, eyepieces, or visual accessories — purely a camera tool out of the box.
Sky-Watcher
Sky-Watcher Skyliner 150P
No tracking or GoTo means objects drift out of view every 30–60 seconds at high magnification, requiring constant manual re-centering.
1.2-metre tube length makes storage, transport, and backyard maneuvering genuinely awkward compared to shorter or collapsible designs.
Periodic collimation required, particularly after transport — unfamiliar territory for visual observers who've never maintained a Newtonian.
Included 25mm and 10mm eyepieces are basic Plössl designs; noticeable improvement requires purchasing better eyepieces separately.
1200mm focal length limits true field of view to approximately 1 degree — too narrow to frame the full extent of Andromeda or sweep large nebulae.
Which is right for you?
Two different buyers. Two different right answers.
The custom-rig optical tube
Sky-Watcher · Sky-Watcher Quattro 150P
You'll love the Quattro 150P if you're already committed to astrophotography, own or plan to own a camera tracker and a guidescope, and your target list is dominated by large nebulae like the Rosette, North America, and Heart and Soul — where short exposures at f/5 and wide field of view translate directly to more photons in less time. You're not after visual views; you're after images, and you're willing to absorb the cost and complexity of a full imaging rig.
The maximum-aperture visual reflector
Sky-Watcher · Sky-Watcher Skyliner 150P
The Skyliner 150P is for you if you want to start observing the night sky tonight with a complete, stable telescope that requires no additional equipment, no computer, and no alignment routines — you'll learn planets and deep-sky objects by hand, at your own pace, and you'll genuinely enjoy the mechanical simplicity of a Dobsonian's push-to motion. You're not trying to image the sky; you're trying to see it clearly and develop your observing skills on a budget.
Our verdict
This comparison has a catch: the Sky-Watcher Quattro 150P is a bare optical tube. You cannot use it without a separate mount — which adds meaningful cost and complexity. The Sky-Watcher Skyliner 150P is a complete, ready-to-observe package.
For most buyers, the Sky-Watcher Skyliner 150P is the right choice — you can observe the same night it arrives. The Sky-Watcher Quattro 150P makes sense if you already own a compatible mount, or are deliberately building a specific imaging setup piece by piece. If I had to choose for a first telescope: the Sky-Watcher Skyliner 150P, without hesitation.
Sky-Watcher Quattro 150P
View Sky-Watcher Quattro 150P →Sky-Watcher Skyliner 150P
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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 | Sky-Watcher Quattro 150P | Sky-Watcher Skyliner 150P |
|---|---|---|
Aperture The most important spec — bigger = more light = better views | 150mm | 150mm |
Focal Length Longer = more magnification potential | 750mm | 1200mm |
Focal Ratio Lower f-number = wider field of view; higher = more magnification per eyepiece | f/5 | f/8 |
Optical Design The type of optics — each design has different strengths | Newtonian Reflector | Dobsonian |
Coatings Better coatings = more light transmission through the optics | Parabolic primary mirror, fully multi-coated | Parabolic primary mirror, fully multi-coated |
How do you point it?
| Spec | Sky-Watcher Quattro 150P | Sky-Watcher Skyliner 150P |
|---|---|---|
Mount Type The mechanical system that holds and moves the telescope | None (OTA only) | Dobsonian |
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 | Sky-Watcher Quattro 150P | Sky-Watcher Skyliner 150P |
|---|---|---|
Focuser Size 2" accepts wider eyepieces and gives better low-power views | 2" | 1.25" |
Focuser Type Rack-and-pinion is standard; Crayford and dual-speed are smoother | Dual-speed Crayford (10:1 reduction) | Rack and pinion |
Size & weight
| Spec | Sky-Watcher Quattro 150P | Sky-Watcher Skyliner 150P |
|---|---|---|
OTA Weightⓘ Optical tube only — useful for comparing mount load capacity | 4.6kg | 6.8kg |
Total Weight Full setup including mount — this is what you lug to the car | — | 13kg |
Tube Length | — | 1150mm |
Tube Material | Steel | Steel |
What's in the box?
| Spec | Sky-Watcher Quattro 150P | Sky-Watcher Skyliner 150P |
|---|---|---|
Eyepieces Included eyepieces — more is better, but quality matters more than quantity | — | 25mm and 10mm Super eyepieces |
Finder Scope Helps you locate areas of the sky before switching to the main eyepiece | — | 6x30 optical finder |
Diagonal Tilts the eyepiece 90° for comfortable viewing — useful on refractors |
Blue highlight: Sky-Watcher Quattro 150P advantage · Amber highlight: Sky-Watcher Skyliner 150P advantage · Greyed cells: equal or subjective.