Telescope Comparison
Sky-Watcher Explorer 150PL vs Sky-Watcher Virtuoso GTi 150P
One finds objects for you. The other makes you earn them.
First light
Sky-Watcher · 150mm · £249
The sky-learner's equatorial scope
- 150mm newtonian reflector on a manual equatorial mount
- Good for: Moon, planets, bright star clusters and nebulae
- Setup includes rough polar alignment before observing — more steps than a simple alt-az
- Mount axes feel counterintuitive at first; users find they become natural after several sessions
- Keeps the door open for adding tracking motors and moving into astrophotography later
Sky-Watcher · 150mm · £449
The guided beginner's telescope
- 150mm 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
- 6.5kg 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
Sky-Watcher Explorer 150PL's longer focal length reaches higher magnification with the same eyepiece — better reach for planetary detail. Sky-Watcher Virtuoso GTi 150P's shorter focal length gives a wider true field — better for large open clusters and extended nebulae.
Focal ratio
Sky-Watcher Virtuoso GTi 150P's faster f/5 delivers wider fields with any eyepiece — better for open clusters and large nebulae. Sky-Watcher Explorer 150PL's f/8 provides more magnification per eyepiece — better for fine planetary detail.
Mount type
Sky-Watcher Virtuoso GTi 150P adds GoTo — it finds any target in its database after alignment. Sky-Watcher Explorer 150PL requires manual navigation.
Weight (OTA)
Sky-Watcher Explorer 150PL's optical tube is 1.4kg 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
| Target | Sky-Watcher Explorer 150PL | Sky-Watcher Virtuoso GTi 150P |
|---|---|---|
| Planets | ||
| Moon | Excellent 150mm aperture and f/8 focal ratio reward high-magnification lunar detail — craterlets, rilles, and shadow play along the terminator are superb. | Excellent 150mm resolves craters, rilles, and mountain shadows in fine detail; the fast f/5 ratio means slightly lower magnification per eyepiece, but a Barlow unlocks high-power lunar work |
| Saturn | Excellent 150mm aperture and 1200mm focal length put Cassini Division and cloud banding within reach in steady seeing. | Good Rings clearly separated, Cassini Division visible in good seeing; 750mm focal length benefits from a Barlow for higher magnification |
| Jupiter | Excellent Multiple cloud belts, the Great Red Spot, and Galilean moon shadows are visible at 150–200x. | Good Two main equatorial belts, colour variation, and up to four Galilean moons; a Barlow helps push useful magnification |
| Mars | Good 150mm aperture shows the polar cap and dark surface markings near opposition — benefits from the long focal length for scale. | Good 150mm aperture shows disc detail and polar cap at opposition; benefits from high magnification via Barlow |
Deep sky | ||
| Orion Nebula (M42) | Good Bright core and Trapezium are striking, but the 1200mm focal length crops the outer nebulosity compared to a wider-field scope. | Excellent 150mm at f/5 delivers bright, wide-field views with sweeping nebulosity and a resolved Trapezium |
| Andromeda Galaxy (M31) | Moderate Bright core is easy, but the galaxy's full extent far exceeds the narrow field — only the central region is visible. | Excellent 750mm focal length frames the bright core and inner halo well; 150mm aperture helps reveal outer structure in dark skies |
| Open clusters | Moderate Larger clusters like the Double Cluster overfill the field at 1200mm; smaller, compact clusters fare better. | Excellent 750mm focal length gives wide enough fields to frame the Pleiades, Double Cluster, and similar targets attractively |
| Globular clusters | Good 150mm begins to resolve stars at the edges of M13 and M22 — a clear step up from smaller apertures. | Good 150mm begins to resolve individual stars at the edges of M13 and M92; cores remain unresolved but granular |
| Faint galaxies | Good 150mm gathers enough light to detect many Messier and brighter NGC galaxies, though detail is limited. | Good 150mm gathers enough light for dozens of Messier and brighter NGC galaxies as distinct shapes; structural detail limited to the brightest |
| Milky Way / wide field | Not recommended 1200mm focal length gives far too narrow a field for sweeping Milky Way star fields. | Good 750mm focal length gives pleasant sweeping fields but falls short of the ultra-wide context a shorter-focus instrument provides |
Other | ||
| Double stars | Excellent 150mm aperture and f/8 focal ratio produce clean, high-contrast Airy discs — resolves pairs down to about 0.8 arcseconds. | Good 150mm resolves doubles down to roughly 0.8 arcseconds; f/5 focal ratio is less forgiving on tight pairs than a longer-ratio scope |
| Astrophotography (planetary) | Good 150mm aperture and 1200mm focal length suit webcam planetary imaging; the optional RA motor drive is strongly recommended to reduce drift. | Moderate 150mm aperture captures decent planetary video for stacking; GoTo tracking keeps the target centred, but 750mm native focal length needs a Barlow for image scale |
| Astrophotography (deep sky) | Not applicable | Moderate Alt-az GoTo tracks objects but introduces field rotation, limiting exposures to a few seconds — useful for EAA and live stacking only |
The real tradeoff
Both scopes are capable. The question is which one fits the way you actually observe.
Sky-Watcher Explorer 150PL
- You'll spend your observing session at high magnification, hunting planetary detail and tight double stars — Saturn's Cassini Division and Castor's closest components are your wins, and the equatorial mount's slow-motion controls let you track them smoothly once aligned.
- You'll manually nudge the slow-motion controls constantly at 200× magnification to keep objects centred, because drift is relentless without a motor drive — this is meditative for some observers and tedious for others.
- You'll live with a 1.2-metre tube that dominates your car boot and needs careful balancing on the EQ3-2, but reward yourself with crisp, high-contrast views where lunar rilles and planetary belts stay sharp edge-to-edge.
Sky-Watcher Virtuoso GTi 150P
- You'll tap your phone to find 150 deep-sky objects automatically, then spend your session actually observing nebulae and galaxies rather than star-hopping — the GoTo system does the heavy lifting so you don't.
- You'll place this scope on any sturdy table, set it up in minutes, and pack it away just as quickly — there's no long tube to wrestle or equatorial mount to polar-align, making weeknight observing feel casual rather than ceremonial.
- You'll see the Orion Nebula's full wings and frame the Double Cluster beautifully in a wide field, but you'll also accept that coma creeps into the edges at high power and that field rotation kills any serious astrophotography ambition.
The dark side
Every scope has a personality. Here’s where each one gets difficult.
Sky-Watcher
Sky-Watcher Explorer 150PL
The EQ3-2 mount struggles with the long 150PL tube's leverage — wind and vibration cause noticeable shake at high magnification, particularly frustrating when you're tracking Saturn or attempting to split close doubles.
No motor drive means objects drift continuously out of view at 200× magnification, forcing constant correction via slow-motion controls — this is mandatory drudgery, not optional refinement.
The 1.2-metre tube creates real practical friction: awkward storage, difficult transport, balancing challenges on the mount, and the supplied 6×30 finder is too dim and narrow to be useful — most users immediately want a red-dot or Telrad upgrade.
Sky-Watcher
Sky-Watcher Virtuoso GTi 150P
Tabletop design is a hidden constraint — you need a sturdy, vibration-free surface at waist height; an unsuitable table or pillar introduces frustration that no aperture advantage can overcome.
The f/5 focal ratio produces noticeable coma at the field edges with standard eyepieces — you'll want to invest in quality wide-field or ED glass to tame it, adding cost beyond the scope itself.
Alt-az GoTo tracking introduces field rotation during long exposures, limiting astrophotography to a few seconds maximum; WiFi alignment requires a smartphone or tablet with the SynScan app — there's no traditional hand controller as backup.
Which is right for you?
Two different buyers. Two different right answers.
The sky-learner's equatorial scope
Sky-Watcher · Sky-Watcher Explorer 150PL
You'll love the 150PL if you're a patient planetary and lunar observer who enjoys equatorial mount discipline — you'll reach magnifications that reveal detail other amateur scopes miss, and you'll accept the manual tracking and long tube as the price of that sharpness. You're not chasing wide-field nebulae or grab-and-go sessions; you're settling in for focused, high-power work. This scope is for you if you want to learn mount mechanics without GoTo's automation hiding the craft.
The guided beginner's telescope
Sky-Watcher · Sky-Watcher Virtuoso GTi 150P
You'll love the Virtuoso GTi if you want to actually observe deep-sky objects rather than spend half your session finding them — the GoTo system is your real advantage, not a luxury. You'll value portability and quick setup over ultimate planetary performance, you're comfortable with smartphones, and you'd rather frame the Double Cluster beautifully at low power than push Saturn to 200×. This scope is for you if observing a variety of objects casually matters more than mastering one technique perfectly.
Our verdict
The Sky-Watcher Virtuoso GTi 150P handles object location automatically — align once, the scope slews to anything in its database. The Sky-Watcher Explorer 150PL asks you to navigate by star-hopping, which takes longer but builds real sky knowledge.
For most beginners, the Sky-Watcher Virtuoso GTi 150P removes the biggest early frustration: not being able to find anything from a light-polluted garden. The Sky-Watcher Explorer 150PL is the better choice if learning the sky manually is part of why you want a telescope. If I had to choose for a first-time buyer: the Sky-Watcher Virtuoso GTi 150P — find things first, learn the sky later.
Sky-Watcher Explorer 150PL
View Sky-Watcher Explorer 150PL →Sky-Watcher Virtuoso GTi 150P
View Sky-Watcher Virtuoso GTi 150P →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 Explorer 150PL | Sky-Watcher Virtuoso GTi 150P |
|---|---|---|
Aperture The most important spec — bigger = more light = better views | 150mm | 150mm |
Focal Length Longer = more magnification potential | 1200mm | 750mm |
Focal Ratio Lower f-number = wider field of view; higher = more magnification per eyepiece | f/8 | 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 with multi-coated optics | Parabolic primary mirror with multi-coated optics |
How do you point it?
| Spec | Sky-Watcher Explorer 150PL | Sky-Watcher Virtuoso GTi 150P |
|---|---|---|
Mount Type The mechanical system that holds and moves the telescope | Equatorial | 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 Explorer 150PL | Sky-Watcher Virtuoso GTi 150P |
|---|---|---|
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 | Rack and pinion | Rack and pinion |
Size & weight
| Spec | Sky-Watcher Explorer 150PL | Sky-Watcher Virtuoso GTi 150P |
|---|---|---|
OTA Weightⓘ Optical tube only — useful for comparing mount load capacity | 5.1kg | 6.5kg |
Total Weightⓘ Full setup including mount — this is what you lug to the car | 14kg | 6.5kg |
Tube Length | 900mm | — |
Tube Material | Steel | Steel (collapsible FlexTube) |
What's in the box?
| Spec | Sky-Watcher Explorer 150PL | Sky-Watcher Virtuoso GTi 150P |
|---|---|---|
Eyepieces Included eyepieces — more is better, but quality matters more than quantity | 25mm and 10mm Kellner | 25mm and 10mm Super eyepieces |
Finder Scope Helps you locate areas of the sky before switching to the main eyepiece | 6x30 optical finder scope | Red dot finder |
Diagonal Tilts the eyepiece 90° for comfortable viewing — useful on refractors |
Smart features
| Spec | Sky-Watcher Explorer 150PL | Sky-Watcher Virtuoso GTi 150P |
|---|---|---|
Built-in Camera Records and stacks images automatically — no separate camera needed | ||
App Controlled | ||
WiFi | ||
Battery Included |
Blue highlight: Sky-Watcher Explorer 150PL advantage · Amber highlight: Sky-Watcher Virtuoso GTi 150P advantage · Greyed cells: equal or subjective.