Telescope Comparison
Sky-Watcher Quattro 150P vs Sky-Watcher Star Discovery P1 130
The Sky-Watcher Star Discovery P1 130 is a complete setup. The Sky-Watcher Quattro 150P needs a mount before it's usable.
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 · 130mm · £329
The guided beginner's telescope
- 130mm newtonian reflector 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
- 7kg 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
Sky-Watcher Quattro 150P gathers 1.3× 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
Sky-Watcher Quattro 150P's longer focal length reaches higher magnification with the same eyepiece — better reach for planetary detail. Sky-Watcher Star Discovery P1 130's shorter focal length gives a wider true field — better for large open clusters and extended nebulae.
Focal ratio
Same focal ratio — the same eyepiece gives equivalent magnification and true field in both scopes.
Mount type
Sky-Watcher Quattro 150P has no mount — add a compatible mount before you can observe. Sky-Watcher Star Discovery P1 130 is a complete ready-to-use system.
Weight (OTA)
Sky-Watcher Star Discovery P1 130's optical tube is 1.2kg lighter. Relevant if you plan to use it on multiple mounts or carry the tube to dark-sky sites separately.
Optical design
Both are Newtonian reflectors — the same optical formula. Any performance difference comes from collimation quality, focal ratio, and eyepiece choice, not the design itself.
At the eyepiece
Sky-Watcher
Sky-Watcher Quattro 150P
The Moon fills the field at low power with more detail than you'll have time to explore on any given night. Saturn's rings are unmistakable from the first session; in good seeing, the Cassini Division — the dark gap between the A and B rings — is a genuine target at higher magnification. Jupiter shows two equatorial cloud bands clearly, the four Galilean moons changing position night to night. The Orion Nebula (M42) shows clear structure — nebulosity spreading around the Trapezium, which splits at moderate power. The Andromeda Galaxy (M31) shows a concentrated core clearly. The Hercules Cluster (M13) shows some resolution at the edges at higher magnification.
Sky-Watcher
Sky-Watcher Star Discovery P1 130
The Moon fills the field at low power with more detail than you'll have time to explore on any given night. Saturn's rings are unmistakable from the first session; in good seeing, the Cassini Division — the dark gap between the A and B rings — is a genuine target at higher magnification. Jupiter shows two equatorial cloud bands clearly, the four Galilean moons changing position night to night. The Orion Nebula (M42) shows clear structure — nebulosity spreading around the Trapezium, which splits at moderate power. The Andromeda Galaxy (M31) shows a concentrated core clearly. The Hercules Cluster (M13) shows some resolution at the edges at higher magnification.
The real tradeoff
Both scopes are capable. The question is which one fits the way you actually observe.
The Sky-Watcher Star Discovery P1 130 is a complete package — everything arrives in one box and you can observe the same day. The Sky-Watcher Quattro 150P is a bare optical tube that needs a separate compatible mount before you can point it at anything, adding significant cost and complexity. Unless you already own a suitable mount, the Sky-Watcher Star Discovery P1 130 is the practical choice.
The dark side
Every scope has a personality. Here’s where each one gets difficult.
Sky-Watcher
Sky-Watcher Quattro 150P
No mount included
You cannot observe until you buy a separate compatible mount — add at least £100–300 before you have a working telescope.
Nothing to look through on day one
Until a mount arrives, the optical tube is a piece of glass you cannot point at the sky.
Sky-Watcher
Sky-Watcher Star Discovery P1 130
Alignment required every session
GoTo star alignment cannot be skipped — the mount needs to know where it is pointing before it can find objects. This adds several minutes to the start of every session, every time.
Collimation: the skill nobody mentions in the listing
The mirrors go out of alignment with use. Stars look bloated rather than sharp when this happens. Users report that a Cheshire eyepiece makes collimation straightforward once learned, but most beginners don't discover they need it until their second or third month.
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 this if…
- You already own a compatible equatorial or alt-az mount — this is the optical tube you've specifically chosen to put on it
- You're building an imaging rig piece by piece and know exactly what you need at the end of a focuser
- Choosing an optical tube independently of the mount gives you more flexibility over your overall system
This will frustrate you if…
- You buy it without fully accounting for the mount — add at least £100–300 to the purchase price before you have a working telescope
- You expected a complete package and didn't realise this is a bare optical tube that cannot be used without a separate mount
The guided beginner's telescope
Sky-Watcher · Sky-Watcher Star Discovery P1 130
You’ll love this if…
- You want to navigate straight to targets without a star atlas — align once and the scope slews to any object in its database on demand
- You observe from a light-polluted garden where star-hopping to faint deep-sky objects would take most of a clear night
- You want objects to stay centred at high magnification without having to manually nudge the scope every few minutes
This will frustrate you if…
- You find the star alignment required at the start of every session frustrating — GoTo alignment cannot be skipped, and several minutes on a cold night before you can observe is the reality
- You notice that stars look bloated rather than sharp and don't know why — users report this is usually a collimation issue that's straightforward to fix once you know about it, but the listing doesn't mention it
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 Star Discovery P1 130 is a complete, ready-to-observe package.
For most buyers, the Sky-Watcher Star Discovery P1 130 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 Star Discovery P1 130, without hesitation.
Sky-Watcher Quattro 150P
View Sky-Watcher Quattro 150P →Sky-Watcher Star Discovery P1 130
View Sky-Watcher Star Discovery P1 130 →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 Star Discovery P1 130 |
|---|---|---|
Apertureⓘ The most important spec — bigger = more light = better views | 150mm | 130mm |
Focal Length Longer = more magnification potential | 750mm | 650mm |
Focal Ratio Lower f-number = wider field of view; higher = more magnification per eyepiece | f/5 | f/5 |
Optical Design The type of optics — each design has different strengths | Newtonian Reflector | Newtonian Reflector |
Coatings Better coatings = more light transmission through the optics | Parabolic primary mirror, fully multi-coated | Parabolic primary mirror with aluminium coating and SiO2 overcoat |
How do you point it?
| Spec | Sky-Watcher Quattro 150P | Sky-Watcher Star Discovery P1 130 |
|---|---|---|
Mount Type The mechanical system that holds and moves the telescope | None (OTA only) | 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 | Sky-Watcher Quattro 150P | Sky-Watcher Star Discovery P1 130 |
|---|---|---|
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 Star Discovery P1 130 |
|---|---|---|
OTA Weightⓘ Optical tube only — useful for comparing mount load capacity | 4.6kg | 3.4kg |
Total Weight Full setup including mount — this is what you lug to the car | — | 7kg |
Tube Length | — | 610mm |
Tube Material | Steel | Aluminium |
What's in the box?
| Spec | Sky-Watcher Quattro 150P | Sky-Watcher Star Discovery P1 130 |
|---|---|---|
Eyepieces Included eyepieces — more is better, but quality matters more than quantity | — | 10mm and 25mm eyepieces |
Finder Scope Helps you locate areas of the sky before switching to the main eyepiece | — | Red dot finder |
Diagonal Tilts the eyepiece 90° for comfortable viewing — useful on refractors |
Smart features
| Spec | Sky-Watcher Quattro 150P | Sky-Watcher Star Discovery P1 130 |
|---|---|---|
Built-in Camera Records and stacks images automatically — no separate camera needed | ||
App Controlled | ||
WiFi | ||
Battery Included |
Blue highlight: Sky-Watcher Quattro 150P advantage · Amber highlight: Sky-Watcher Star Discovery P1 130 advantage · Greyed cells: equal or subjective.