Telescope Comparison
Bresser Messier N-150/750 vs Sky-Watcher Skyliner 200P
The specs are close. The experience isn't.
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First light
Bresser · 150mm · £229
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 · 200mm · £414
The maximum-aperture visual reflector
- 200mm 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
- 17.5kg 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
Sky-Watcher Skyliner 200P gathers 1.8× 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 Skyliner 200P's longer focal length reaches higher magnification with the same eyepiece — better reach for planetary detail. Bresser Messier N-150/750's shorter focal length gives a wider true field — better for large open clusters and extended nebulae.
Focal ratio
Bresser Messier N-150/750's faster f/5 delivers wider fields with any eyepiece — better for open clusters and large nebulae. Sky-Watcher Skyliner 200P's f/6 provides more magnification per eyepiece — better for fine planetary detail.
Mount type
Sky-Watcher Skyliner 200P's Dobsonian is immediately intuitive — no alignment, push to aim, observe. Bresser Messier N-150/750's equatorial mount requires polar alignment before each session but tracks the sky as Earth rotates, keeping objects centred.
Weight (OTA)
Bresser Messier N-150/750's optical tube is 6.2kg lighter. Relevant if you plan to use it on multiple mounts or carry the tube to dark-sky sites separately.
Optical design
Bresser Messier N-150/750 is a Newtonian reflector (mirrors, needs occasional collimation); Sky-Watcher Skyliner 200P 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
Bresser
Bresser Messier N-150/750
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 Skyliner 200P
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 wide nebulosity with the Trapezium splitting cleanly into four points at 80×. The Hercules Cluster (M13) begins to resolve into individual stars at the outer edges at higher magnification. The Andromeda Galaxy (M31) fills a wide-field eyepiece; the bright core and inner disc are obvious, and on a dark night the dust lane becomes visible with careful looking. The Sky-Watcher Skyliner 200P gathers 1.8× more light than the Bresser Messier N-150/750 — a difference that's marginal on bright targets but visible on fainter ones: dimmer galaxies, faint globular clusters, and extended nebulosity that sits below the threshold of the smaller aperture.
The real tradeoff
Both scopes are capable. The question is which one fits the way you actually observe.
Bresser Messier N-150/750
- You'll spend a few minutes each session assembling the tube on its equatorial mount and polar-aligning, but once you're set up, you can track objects by turning a single slow-motion knob — a real comfort at 150x on Saturn that the Dobsonian can't match.
- You're getting a genuinely excellent dual-speed Crayford focuser at a price point where most competitors ship a basic rack-and-pinion — nailing focus on a tight double star or a planetary disc feels noticeably more precise than with the Skyliner's stock focuser.
- You're giving up 50mm of aperture to stay under £230, and you'll feel that loss most on deep-sky nights: M13 stays granular rather than fully resolved, and M51's spiral arms remain elusive where the 200P starts to reveal them.
Sky-Watcher Skyliner 200P
- You'll pull the rocker box out of the car, drop the tube on top, and be observing in under five minutes — no polar alignment, no counterweights, no fiddling with latitude bolts — and that simplicity means you'll actually use this scope on a work night.
- You're buying the aperture jump that matters most in visual astronomy: that extra 50mm over the Bresser turns M13 from a granular blob into a resolved swarm of stars and gives you a genuine shot at seeing spiral structure in M51 under dark skies.
- You'll nudge the tube by hand to keep Jupiter centred at 200x, and that gets old faster than you expect — the Bresser's equatorial slow-motion controls feel like a luxury by comparison when you're chasing fine planetary detail.
The dark side
Every scope has a personality. Here’s where each one gets difficult.
Bresser
Bresser Messier N-150/750
The f/5 focal ratio is the least forgiving common Newtonian speed for collimation errors — if you don't check and adjust it regularly, you'll see degraded star images and lost contrast, especially at higher magnifications on planets.
The included equatorial mount ships without motor drive, so objects drift out of view at high power and any astrophotography beyond a snapshot requires purchasing a motor upgrade — and even then, mount flexure limits what you can achieve with a camera attached.
Coma at the field edges is pronounced at f/5 with wide-angle eyepieces, so if you invest in a nice 82° eyepiece you'll want a coma corrector to go with it, adding to the real cost of ownership.
Sky-Watcher
Sky-Watcher Skyliner 200P
The tube is nearly 1.2 metres long and the total package approaches 24kg — you need a car boot that can swallow it and a storage spot that can accommodate it, making this a serious commitment of household space.
There is no tracking whatsoever: at 200x on Jupiter you'll be nudging the tube every 20–30 seconds, and there's no upgrade path to motorised tracking without replacing the entire mount.
The open tube exposes the secondary mirror to dew and stray light; you'll likely end up buying or making a light shroud, and on humid nights you may find the secondary fogging before you've finished your observing list.
Which is right for you?
Two different buyers. Two different right answers.
The sky-learner's equatorial scope
Bresser · Bresser Messier N-150/750
You'll love this if you're a beginner who wants one package under £250 that includes an equatorial mount — you're curious about pointing a camera at the Moon or a bright planet, you like the idea of slow-motion tracking controls, and you're happy to learn collimation and accept that your deep-sky views will be good rather than great. This isn't for you if you want the best possible visual views for the money, or if spending ten minutes on polar alignment before every session sounds like a chore rather than a learning experience.
The maximum-aperture visual reflector
Sky-Watcher · Sky-Watcher Skyliner 200P
You'll love this if your priority is seeing the most through the eyepiece for under £350 — you want to resolve globular clusters into stars, chase galaxy detail in Virgo, and you don't mind nudging the scope by hand to keep objects centred. This isn't for you if you live in a flat with no lift, if you need a scope that fits in a rucksack, or if the idea of manually tracking objects at high power sounds frustrating rather than meditative — the Skyliner rewards patient, visual-first observers and punishes anyone hoping to bolt on a camera.
Our verdict
The Bresser Messier N-150/750 is designed to get a new observer to the eyepiece quickly with minimal friction. The Sky-Watcher Skyliner 200P assumes you already know what you want from the sky, or are genuinely willing to put in the learning time.
If this is your first telescope, buy the Bresser Messier N-150/750. You'll spend a year learning what you actually want, and those lessons are cheaper at £229. The Sky-Watcher Skyliner 200P is the scope to buy when you've outgrown your first one and know exactly why you want it. If I had to choose for a first-time buyer: the Bresser Messier N-150/750.
Bresser Messier N-150/750
View Bresser Messier N-150/750 →Sky-Watcher Skyliner 200P
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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 | Bresser Messier N-150/750 | Sky-Watcher Skyliner 200P |
|---|---|---|
Apertureⓘ The most important spec — bigger = more light = better views | 150mm | 200mm |
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/6 |
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 coated | Parabolic primary mirror, fully multi-coated |
How do you point it?
| Spec | Bresser Messier N-150/750 | Sky-Watcher Skyliner 200P |
|---|---|---|
Mount Type The mechanical system that holds and moves the telescope | Equatorial | 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 | Bresser Messier N-150/750 | Sky-Watcher Skyliner 200P |
|---|---|---|
Focuser Size 2" accepts wider eyepieces and gives better low-power views | 2" | 2" |
Focuser Type Rack-and-pinion is standard; Crayford and dual-speed are smoother | Dual-speed Crayford (2" with 1.25" adapter) | Dual-speed Crayford (10:1 reduction) |
Size & weight
| Spec | Bresser Messier N-150/750 | Sky-Watcher Skyliner 200P |
|---|---|---|
OTA Weightⓘ Optical tube only — useful for comparing mount load capacity | 5kg | 11.2kg |
Total Weightⓘ Full setup including mount — this is what you lug to the car | 13.5kg | 17.5kg |
Tube Length | 670mm | 1200mm |
Tube Material | Steel | Steel |
What's in the box?
| Spec | Bresser Messier N-150/750 | Sky-Watcher Skyliner 200P |
|---|---|---|
Eyepieces Included eyepieces — more is better, but quality matters more than quantity | 25mm and 10mm eyepieces | 25mm and 10mm Super eyepieces |
Finder Scope Helps you locate areas of the sky before switching to the main eyepiece | 8x50 optical finder | 8x50 right-angle correct-image finder |
Diagonal Tilts the eyepiece 90° for comfortable viewing — useful on refractors |
Blue highlight: Bresser Messier N-150/750 advantage · Amber highlight: Sky-Watcher Skyliner 200P advantage · Greyed cells: equal or subjective.