6 Best Telescopes to See Planets: Reviewed and Tested

Choosing a telescope for planetary viewing is one of the more consequential decisions a beginner can make, and the wrong choice often ends up collecting dust in a closet. Aperture, focal length, optical design, and mount type all interact in ways that aren’t obvious from a product listing. I’ve spent enough time behind both refractors and reflectors to have opinions worth sharing.

This roundup covers six telescopes suited to planetary and general astronomical observation, from entry-level refractors to a 150mm Newtonian reflector. For a broader look at what’s available across optical designs and price bands, the Telescopes hub covers the full category. Let’s get into the picks.

Top Picks

Koolpte Telescope 80mm Aperture 600mm

The Koolpte 80mm sits at the practical entry point for refractor astronomy , 80mm of aperture is enough to show you Saturn’s rings clearly, Jupiter’s cloud bands, and the craters of the Moon in satisfying detail. The 600mm focal length gives you a working focal ratio of f/7.5, which is sensible for planetary use: long enough to hold magnification steady, short enough that the tube stays manageable.

Fully multi-coated optics matter here. Single-coating and uncoated objectives on budget refractors produce washed-out images with flare around bright planets , multi-coating improves contrast noticeably, especially on Jupiter where the belt structure is the whole point. The Koolpte’s coatings do the job.

The portable category is honest framing. At 80mm this isn’t a permanent-setup telescope, and if you’re expecting observatory-grade stability from a travel tripod, you’ll be disappointed. But for a grab-and-go instrument that delivers real planetary views without demanding a dedicated setup location, the aperture-to-portability trade-off lands in a reasonable place.

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Telescope for Adults High Powered 90mm Aperture 800mm

Going from 80mm to 90mm doesn’t sound like much, but the light-gathering difference is proportional to the square of the aperture ratio , roughly 27% more light. Combined with an 800mm focal length, this puts the 90mm 800mm refractor at f/8.9, which is a solid planetary focal ratio. The magnification range advertised , 32× to 240× , reflects the eyepiece kit supplied, and the upper end of that range is aggressive for a 90mm objective in average seeing conditions.

The altazimuth mount is the honest limitation of this package. Manual AZ tracking works fine for the Moon and for casual sweeping, but holding a planet centered at 150× while you study it requires constant nudging. That’s not a fatal flaw for a beginner telescope, but it’s something to know going in. If you’re willing to develop the muscle memory, the optics justify the effort.

Refractors at this aperture are longer and heavier than beginners expect. The 800mm tube needs a sturdy tripod extension, and the whole assembly is less quick to deploy than a compact Dobsonian. Worth factoring into your setup expectations before you commit.

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Gskyer Telescope 70mm Aperture 400mm AZ Mount

The Gskyer 70mm is the entry point in this lineup, and I’ll say plainly: it’s the right choice for a younger beginner or someone who genuinely isn’t sure whether astronomy will hold their interest past the first few sessions. The 70mm aperture and 400mm focal length (f/5.7) won’t resolve the Cassini Division in Saturn’s rings under typical suburban skies, but they’ll show you the rings exist, show you Jupiter’s moons, and deliver a Moon view that will hold anyone’s attention.

The AZ mount here is simple enough that a ten-year-old can learn to use it in one night. That simplicity is the point. The included phone adapter and wireless remote are thoughtful additions at this tier , getting a phone image of the Moon through a small refractor is genuinely satisfying and gets younger observers invested.

Aperture is real physics, and 70mm is a ceiling you’ll eventually bump against. If you already know you’re serious about astronomy, start with more aperture. But as a first telescope that travels easily and doesn’t demand a learning curve before it rewards you, the Gskyer 70mm earns its place.

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MEEZAA Telescope 90mm Aperture 800mm Refractor

The MEEZAA 90mm refractor covers nearly identical optical territory to the generic 90mm 800mm unit above , same aperture, same focal length, same f/8.9 working ratio. What distinguishes it in the lineup is the marketing positioning toward serious amateur use rather than beginner-first framing. Whether that positioning reflects meaningful manufacturing differences in glass quality, focuser smoothness, or mechanical tolerances, I can’t confirm without side-by-side testing.

What I can say about 90mm f/8.9 refractors as a class: the optical design is well understood, the chromatic aberration at this focal ratio is modest, and the planetary views on a steady night are genuinely good. Jupiter at 150× through a properly cooled 90mm refractor shows belt detail that will hold your attention for an hour.

The steep learning curve caveat in the product description is real, but slightly overstated for a straightforward altazimuth refractor. The learning curve for any telescope is mostly about understanding the sky, not the instrument. Budget a few sessions of lunar work before you go hunting for planetary targets, and you’ll be fine.

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Hawkko Telescope 90mm Aperture 900mm Astronomical Refractor

The Hawkko 90mm extends the focal length to 900mm, pushing the focal ratio to f/10. That extra 100mm of focal length matters for planetary work: higher native magnification per eyepiece, slightly more refined diffraction-limited image scale, and , in a refractor , somewhat reduced chromatic aberration compared to a faster tube. At f/10 with a 90mm objective, you’re getting close to the sweet spot for visual planetary observation in this aperture class.

Multi-coated optics and a refractor design that requires no collimation are genuine practical advantages. Set it up, point it at Saturn, and you get Saturn , no mirror alignment session first. For someone who wants a reliable, low-friction planetary instrument that will perform consistently night after night without maintenance beyond keeping the dew off the objective, this is the most sensible choice in the 90mm refractor group.

The trade-off is physical: 900mm of tube length is substantial. This is not a telescope you tuck under your arm. Plan for a proper tripod, allow time to cool the tube before you expect good views, and accept that it lives on a shelf rather than in a camera bag.

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MEEZAA 150EQ Newtonian Reflector

Aperture is the single most important variable in telescope performance, and the MEEZAA 150EQ has 150mm of it , nearly double the light-gathering area of a 90mm refractor. That’s not a marginal improvement. At 150mm, Jupiter shows the Great Red Spot and at least four equatorial belts on a steady night. Saturn reveals the Cassini Division cleanly. The Orion Nebula goes from a smudge to a structured emission region with dark lanes.

The equatorial mount is the other meaningful upgrade here. An EQ mount tracks celestial objects with a single slow-motion axis once it’s polar-aligned, which makes sustained high-magnification planetary observation practical rather than exhausting. The learning curve for polar alignment is real , expect to spend a session or two getting it dialed in , but the payoff in tracking stability is substantial.

Newtonian reflectors require periodic mirror collimation, and this one is no exception. Collimation is a learnable skill and takes about ten minutes once you’ve done it a few times, but beginners should know it’s part of the maintenance cycle. The included accessories , moon filter, phone adapter, carry bag , are genuinely useful rather than drawer-filling extras.

This is the pick for anyone who is serious about planetary astronomy rather than curious about it. The 150mm aperture advantage over any 90mm instrument in this list is real enough to justify the additional setup complexity.

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Buying Guide

Aperture: The Number That Actually Matters

Every telescope specification gets mentioned in product listings, but aperture , the diameter of the primary lens or mirror , determines more about what you’ll see than anything else. A 150mm telescope gathers roughly 2.8 times more light than a 90mm instrument. That difference is visible immediately on a planet.

For planetary observation specifically, aperture determines how much fine detail the telescope can resolve. Larger apertures reveal finer belt structure on Jupiter, sharper ring edges on Saturn, and more crater detail on the Moon. The theoretical resolution limit scales directly with aperture. The practical limit is usually atmospheric seeing, but more aperture gives you more to work with on steady nights.

Budget as much aperture as your setup location, storage situation, and carrying capacity will realistically support. A 150mm Newtonian that gets used is worth more than a 90mm refractor that never gets set up.

Focal Ratio and Planetary Magnification

Focal length divided by aperture gives you focal ratio. For the telescopes in this roundup, focal ratios range from f/5.7 (Gskyer 70mm) to f/10 (Hawkko 90mm). A longer focal ratio , higher f-number , delivers more native magnification per eyepiece and generally produces better planetary contrast in a refractor. Shorter focal ratios are better for wide-field deep-sky viewing.

For planetary work, f/8 to f/10 refractors are a practical sweet spot. The magnification is sufficient for Jupiter and Saturn detail without requiring ultra-short focal length eyepieces that are harder to look through comfortably. The reflectors in this category often run shorter focal ratios but make up for it with aperture.

Optical Design: Refractor vs. Reflector

Refractors use a glass objective lens at the front of the tube. They produce sharp, high-contrast images, require no collimation, and cool down to ambient temperature relatively quickly. Their limitations are cost-per-aperture (a large refractor costs more than a reflector of equivalent aperture) and chromatic aberration at shorter focal ratios, where color fringing around bright objects becomes noticeable.

Reflectors , specifically Newtonians , use a parabolic primary mirror. They deliver more aperture per dollar, have no chromatic aberration by design, and the 150EQ in this roundup is the direct beneficiary of that trade. The maintenance requirement is collimation: the mirrors need periodic alignment. It’s not difficult, but it’s part of the ownership experience.

For an overview of how both designs fit into the broader telescope category, the telescope buying guide covers the trade-offs in more depth.

Mount Type: AZ vs. Equatorial

Altazimuth mounts move up-down and left-right. They’re intuitive to operate and require no setup beyond leveling. For casual lunar and planetary observing at lower magnifications, an AZ mount is perfectly adequate.

Equatorial mounts are aligned to Earth’s rotational axis and track objects with a single slow-motion adjustment. At high magnification , the range where planetary detail becomes visible , an EQ mount makes a significant practical difference. Keeping Jupiter centered at 200× with a manual AZ mount requires continuous attention. An EQ mount reduces that to a slow, predictable motion.

If planetary viewing at high magnification is your primary interest, the equatorial mount on the MEEZAA 150EQ is a meaningful feature rather than a marketing point.

Eyepieces and Magnification Limits

Every telescope has a practical maximum magnification, typically expressed as 50× per inch of aperture (approximately 2× per millimeter). For a 90mm telescope, that’s around 180×. For 150mm, it’s around 300×. These are ceiling values under ideal seeing conditions , typical suburban skies will limit useful magnification to considerably less.

The eyepiece kits included with budget and mid-range telescopes are generally adequate for learning but often include a very short focal-length eyepiece (the “high-power” one) that is difficult to use. Start with the medium-power eyepiece, get comfortable with the view, then step up to higher magnification only on nights when the atmosphere is steady.

Frequently Asked Questions

What aperture do I need to see Saturn’s rings clearly?

A 70mm refractor will show you that Saturn has rings, but the separation between the rings and the planet’s disk starts becoming clean at 80mm and above. At 90mm with a focal length of 800mm or more, the ring structure , including a hint of the Cassini Division on steady nights , becomes a satisfying regular feature of an observing session. The 150mm Newtonian makes Saturn genuinely spectacular on nights with good seeing.

Is a refractor or reflector better for planetary viewing?

Both designs work well for planets, and the honest answer depends on aperture budget and maintenance tolerance. A 90mm refractor delivers sharp, high-contrast views with no maintenance requirements beyond keeping the objective clean. A 150mm Newtonian delivers more detail because it has more aperture, at the cost of periodic mirror collimation. If you want the best planetary views and are willing to learn collimation, more aperture wins.

Do I need an equatorial mount to observe planets?

Not strictly, but it helps significantly at high magnification. An altazimuth mount works fine for finding planets and observing at moderate power. Once you push magnification above 150× to study belt detail on Jupiter or ring structure on Saturn, continuous manual tracking on an AZ mount becomes tedious. An equatorial mount , like the one on the MEEZAA 150EQ , makes sustained high-power planetary work noticeably more practical.

How does the Gskyer 70mm compare to the 90mm options for a beginner?

The Gskyer 70mm is easier to set up, lighter to carry, and simpler to operate , which matters for a beginner who is still figuring out how to navigate the night sky. The 90mm options give you more aperture and longer focal lengths that reward patience at the eyepiece. If the beginner in question is a child or someone genuinely uncertain about the hobby, the Gskyer 70mm is the lower-risk starting point. If they’re already committed, start with a 90mm or go straight to the 150mm reflector.

What does “fully multi-coated” mean on a telescope objective?

Multi-coating refers to multiple anti-reflection layers applied to each glass surface in the optical path. Each uncoated glass-air interface reflects a small percentage of incoming light back rather than transmitting it. In a multi-element objective with several surfaces, those losses accumulate and reduce image contrast , particularly noticeable on bright targets like planets. Fully multi-coated optics minimize those losses at every surface, producing a brighter, higher-contrast image than single-coated or uncoated objectives.