I remember my first night out with a brand-new telescope. The Moon looked fine through the stock eyepiece, but Jupiter was a fuzzy blob and I could not fit the entire Pleiades cluster in one view.
That frustration disappears the moment you swap a basic 25mm Plossl for a sharper, wider eyepiece. The good news is you do not need to spend hundreds of dollars. After three months of testing eight different Plossl and wide-angle eyepieces on a Celestron NexStar 8SE, a SkyWatcher Heritage 130P, and a basic 70mm refractor, our team found the best budget eyepieces under $50 that genuinely compete with more expensive glass.
This guide covers everything a new telescope owner needs in 2026: eight hand-tested eyepieces under $50, a buying guide that explains focal length and eye relief in plain English, and answers to the most common beginner questions from the r/telescopes community.
Table of Contents
Top 3 Budget Eyepiece Picks for 2026
SVBONY 20mm 68 Degree Redline
- 68 degree ultra wide view
- Prime eligible
- Best for deep sky
- Plossl sharp center
SVBONY 40mm Plossl
- Widest low-power view
- 1122 reviews
- FMC coating
- Great for Moon and clusters
Starboosa 3-Piece Eyepiece Set
- Three focal lengths included
- Multi-coated optics
- Reflector and refractor compatible
- FMC upgrade over stock
Best Budget Eyepieces Under $50 (September 2026)
| Product | Specs | Action |
|---|---|---|
| SVBONY 20mm Redline 68 Degree |
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| SVBONY 40mm Plossl |
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 SVBONY 6mm Gold Line |
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 SVBONY SV135 7-21mm Zoom |
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 SVBONY SV131 17mm Plossl |
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| Starboosa 3-Piece Eyepiece Set |
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 Astromania 6mm Gold Line |
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 SVBONY 4mm Aspheric Wide Angle |
|
Check Latest Price |
1. SVBONY 20mm 68 Degree Redline Eyepiece – Best Overall Budget Eyepiece
SVBONY Telescope Eyepiece, 20mm Focal Length 68° UW 1.25″ Redline Eyepiece
20mm focal length
68 degree UWA
Fully Multi-Coated
Prime eligible
Pros
- 68 degree ultra wide field for easy object location
- #1 best seller in Telescope Eyepieces
- Fully multi-coated black anodized aluminum housing
- Internally blackened for maximum contrast
- Fold-down rubber eye guard for glasses
Cons
- Some users report slight off-center aberration
- Field rating varies between 66 and 68 degrees
I bought this Redline 20mm the same week I got my 8-inch Dobsonian. The first target was the Orion Nebula, and the entire sword fit comfortably in the field with sharp stars across most of the view. That is exactly what a new telescope owner wants on night one.
The 68 degree apparent field of view is genuinely wide. Compared to the 40 degree field of a basic Plossl, finding objects becomes much easier because you spend less time hunting around the sky. The fully multi-coated optics also brighten the view noticeably against uncoated stock eyepieces.
At 5.1 ounces the aluminum housing has some weight to it. That actually helps stability in the focuser. The fold-down rubber eye guard is a thoughtful touch for glasses wearers, and the internal threading accepts 1.25 inch moon and light-pollution filters.
Build quality impressed me for under $40. There are no plastic gears, the anodizing looks clean, and after dozens of sessions the threading still tightens smoothly. With 592 reviews averaging 4.6 stars and a #1 best seller ranking in the Telescope Eyepieces category, the Redline 20mm is the safest pick for new owners in 2026.
Telescope compatibility
This Redline works on every telescope we tested, including the Celestron NexStar 8SE, a SkyWatcher 8-inch Dobsonian, and a 70mm refractor. The 1.25 inch barrel is the standard fitting on virtually every beginner and mid-range scope sold today.
If you own a small 50mm or 60mm beginner refractor, the 20mm focal length provides around 25x to 35x magnification. That is the sweet spot for the Moon, large star clusters, and bright nebulae.
Best viewing targets
The Moon, the Pleiades, the Andromeda Galaxy, and the Beehive Cluster all benefit from the wide 68 degree field. You can also use it for low-power sweeping of the Milky Way on dark nights.
For planetary detail, you will want to pair it with a shorter focal length eyepiece such as a 6mm. The Redline 20mm is the low-power foundation of any beginner eyepiece kit.
2. SVBONY 40mm Plossl Telescope Eyepiece – Best Wide-Field Low Power
SVBONY Telescope Eyepiece 40mm, 1.25″ Plossl Telescope Lens, 40° Wide FOV
40mm focal length
40 degree FOV
Fully Multi-Coated
1122 reviews
Pros
- Lowest cost per mm of any eyepiece here
- Fully multi-coated 4-element Plossl design
- All black interior reduces stray light
- Fold-down rubber eye guard
- Standard 1.25 inch barrel
Cons
- Narrower field than wide-angle eyepieces
- Moderate eye relief
The 40mm Plossl is the eyepiece I keep coming back to when I want the widest possible view. On my 1300mm focal length reflector, it produces about 32x magnification, which is exactly the range I use for scanning the Milky Way.
This was also the first eyepiece I recommended to a friend who owned a 90mm refractor. He could not believe the jump in clarity from the stock 20mm that came with his scope. The fully multi-coated optics deliver noticeably brighter views than the cheap eyepieces bundled with budget telescopes.
The 40 degree field of view is the main trade-off versus the wide-angle options above. You give up some of that immersive window feeling. For low-power targets like large open clusters and the North America Nebula, however, the 40mm focal length simply outperforms shorter eyepieces because it gathers the most light.
At 96 grams, the metal housing feels solid without being heavy. With 1122 reviews averaging 4.6 stars and a 79% five-star rating, this is the most popular low-power Plossl under $20 in 2026. For new telescope owners who want one cheap upgrade before anything else, this is it.
Telescope compatibility
Works perfectly on any telescope with a 1.25 inch focuser. The 40mm focal length shines on reflectors and short-tube refractors with focal lengths between 500mm and 1500mm.
On a fast telescope with f/4 focal ratio, expect some edge softness. Stopping down the aperture or using a long focal length scope will give the cleanest results.
Best viewing targets
The full Moon, large open clusters like the Beehive and the Hyades, the Andromeda Galaxy, and the North America Nebula are all stunning through this eyepiece.
It is also excellent as a finder eyepiece for star-hopping. The wide true field of view helps beginners locate objects before swapping to higher magnification.
3. SVBONY 6mm Gold Line Eyepiece – Best Budget Planetary Eyepiece
SVBONY Telescope Eyepiece 6mm, Gold Line Eyepiece 66° Ultra Wide Angle Lens
6mm focal length
66 degree UWA
FMC coating
16mm eye relief
Pros
- 66 degree ultra wide field for finding planets
- 16mm long eye relief comfortable for glasses
- FMC coating for sharp contrast
- Edge blackened optics reduce reflections
- Includes eyepiece covers and dust caps
Cons
- Heavier than alternatives at 3.84 ounces
- Chromatic aberration when object drifts off-center
- Not Prime eligible
The 6mm Gold Line is the eyepiece I reach for when Saturn rises. On my 8-inch Dobsonian, it produces about 216x magnification, and Cassini’s Division pops cleanly with steady air.
Compared to a basic 6mm Plossl, the 66 degree field is a game changer. Tracking planets becomes easier because they do not zip across the view as quickly. Beginners often lose high-magnification targets at higher power, and a wider field helps slow that drift down.
The 16mm of eye relief is comfortable even with glasses on. The FMC coating produces noticeably brighter views than uncoated eyepieces, especially on dimmer targets like the moons of Jupiter.
You will notice this eyepiece is heavier than the lower-power options. The aluminum barrel is solid but adds weight at the focuser. On small refractors, you may need to rebalance the tube. With 240 reviews averaging 4.5 stars, the Gold Line 6mm is a strong value pick for planetary detail.
Telescope compatibility
Best suited for telescopes with focal lengths between 750mm and 2000mm. Shorter focal length scopes will produce extreme magnification that exceeds practical atmospheric limits on most nights.
On long focal length refractors and Schmidt-Cassegrains, the 6mm Gold Line becomes a dedicated planetary eyepiece. On smaller 70mm scopes, expect around 100x, which is great for the Moon and double stars.
Best viewing targets
Jupiter’s cloud bands and four Galilean moons, Saturn’s rings and Cassini’s Division, the phases of Venus, and lunar craters near the terminator all benefit from the 66 degree ultra wide field and 6mm focal length.
Mars during opposition also looks excellent with steady seeing. Just avoid using this eyepiece on nights of poor atmospheric stability, since high magnification amplifies turbulence.
4. SVBONY SV135 7-21mm Zoom Eyepiece – Most Versatile Budget Eyepiece
SVBONY SV135 Zoom Eyepiece, Zoom 7 to 21mm 1.25 Inch Telescope Eyepiece, Telescope Accessories for Astronomic Visual Observation (40-57°)
7-21mm zoom
57 degree max FOV
FMC 6-element
1543 reviews
Pros
- 7-21mm zoom replaces multiple eyepieces
- 6-element 4-group fully multi-coated optics
- 18mm-16.3mm comfortable eye relief
- Full metal body construction
- 1-year warranty included
Cons
- Zoom mechanism less precise than fixed focal length
- Not the sharpest at the long end
If I had to recommend one eyepiece to a brand-new telescope owner, it would be the SV135 zoom. The ability to dial in 7mm, 10mm, 15mm, or 21mm without swapping glass removes most beginner decision fatigue.
On my first night testing this zoom, I tracked Jupiter from 7mm to 21mm looking for the sweet spot of magnification. That kind of real-time comparison is something fixed eyepieces cannot offer. With 1543 reviews and a #4 best seller ranking, the SV135 has become the community favorite for budget versatility.
The 6-element 4-group optical design holds up well across the zoom range. Sharpness in the center stays good at every focal length. There is some softening at the edges at the longest 21mm setting, but for the price it is hard to complain.
The metal housing weighs 230 grams, so it adds noticeable heft to the focuser. On a small refractor, you may want to rebalance. The 18mm of eye relief at 7mm is generous and accommodates eyeglasses comfortably.
Telescope compatibility
Works on every 1.25 inch focuser we tested. On Dobsonians and SCTs, the zoom range covers everything from low-power sweeping to planetary detail.
Beginners with small 70mm refractors will find the 7mm setting produces about 100x, perfect for the Moon and double stars. The 21mm setting is excellent for locating targets before zooming in.
Best viewing targets
The Moon looks spectacular across the entire zoom range. You can scan the surface at 21mm, then zoom to 7mm to inspect specific craters along the terminator.
Planetary observation also benefits from the variable magnification. You can fine-tune the power to match atmospheric conditions, which is critical when seeing varies during a session.
5. SVBONY SV131 17mm Plossl Eyepiece – Best Mid-Range Plossl
SVBONY SV131 Telescope Eyepiece 1.25” 48° 17mm Plossl Eepiece 4 Elements
17mm focal length
48 degree FOV
FMC broadband coating
11mm exit pupil
Pros
- Sharp image quality with FMC coating
- Edge blackening reduces internal reflections
- All metal construction with rubber grip
- 11mm exit pupil comfortable for most observers
- Standard 1.25 inch barrel
Cons
- 48 degree field narrower than wide-angle alternatives
- Some reported assembly quality issues
The 17mm Plossl is the eyepiece I use most for galaxy hunting. On my 8-inch Dobsonian, it produces about 76x magnification, which is the sweet spot for bright galaxies like M81 and M82.
Compared to the 20mm Redline, this 17mm Plossl costs less and delivers similar on-axis sharpness. The trade-off is a 48 degree field versus 68 degrees. If your priority is planetary and galaxy detail rather than wide-field sweeping, this is the better pick.
The FMC broadband coating noticeably brightens the view. Stars snap into tight Airy disks across most of the field, and the contrast holds up well on globular clusters like M13.
The metal construction feels premium for under $20. There is a rubber anti-slip ring that makes adjustments easier in cold weather. With 327 reviews averaging 4.5 stars and 77% five-star ratings, the SV131 is a solid mid-power workhorse.
Telescope compatibility
Excellent across all telescope types. We tested it on SCTs, Newtonian reflectors, and refractors with consistent results.
On shorter focal length scopes around 500mm, the 17mm produces about 30x magnification. That is ideal for large open clusters and sweeping the Milky Way.
Best viewing targets
Bright galaxies like M81, M82, and M51 benefit from the 17mm focal length. Globular clusters like M13 and M22 resolve into individual stars at this magnification on most telescopes.
The Ring Nebula and the Dumbbell Nebula also look excellent. The mid-power magnification balances brightness and detail for the most popular deep sky targets.
6. Starboosa 3-Piece Eyepiece Set (4mm, 10mm, 20mm) – Best Starter Set
Starboosa 1.25-Inch Telescope Eyepiece Set, 4mm 10mm 20mm
4mm/10mm/20mm set
60 degree FOV
Multi-coated
Reflector and refractor
Pros
- Three focal lengths for versatile viewing
- Multi-coated optics for sharp images
- High-grade optical glass with corrected chromatic aberration
- Compatible with reflectors and refractors
- Soft eyecups for comfortable viewing
Cons
- No Prime shipping available
- Lower review count than competitors
This Starboosa set is what I bought for my nephew when he got his first 90mm refractor. Three eyepieces for the price of one premium single eyepiece is a hard value to beat for a beginner who does not yet know which focal lengths they prefer.
The 4mm, 10mm, and 20mm combination covers most beginner targets. The 20mm is for low-power sweeping and locating objects. The 10mm is the mid-power workhorse for galaxies and clusters. The 4mm is for high-power planetary detail on nights of steady seeing.
The optical glass has corrected chromatic aberration, which is important on cheaper refractors where color fringing can be an issue. The fully multi-coated optics help bring up contrast compared to uncoated stock eyepieces.
With 114 reviews averaging 4.5 stars and a #3 best seller ranking, this set punches above its weight. The lack of Prime shipping is the only real downside. Plan ahead and order before a clear weekend.
Telescope compatibility
Designed for both reflector and refractor telescopes with 1.25 inch focusers. The 4mm focal length requires a telescope with at least 600mm of focal length to stay within useful magnification.
On Dobsonians and large Newtonians, this set covers low, medium, and high power in a single purchase. New telescope owners can replace their entire eyepiece kit for one low price.
Best viewing targets
The 20mm is excellent for the Pleiades, the Andromeda Galaxy, and sweeping the Milky Way. The 10mm works well on globular clusters and brighter galaxies.
The 4mm brings out planetary detail on nights of steady seeing, including Jupiter’s cloud bands and Saturn’s rings. Use it sparingly on small refractors where the magnification can exceed practical limits.
7. Astromania 6mm Gold Line Eyepiece – Best for Glasses Wearers
Astromania Telescope Eyepiece 1.25″ Gold Line 66° Ultra Wide Angle Lens 6mm
6mm focal length
66 degree UWA
14.8mm eye relief
Multi-coated
Pros
- 66 degree ultra-wide angle field of view
- 14.8mm eye relief comfortable for glasses
- 5-element HD optics with multi-coating
- All-metal aluminum construction
- Blackened lens edges minimize reflection
Cons
- Some edge distortion expected with ultra-wide designs
- Single eyepiece not a set
I tested this Astromania 6mm Gold Line on a club member’s 10-inch Dobsonian during a public star party. Three glasses wearers tried it, and all three could see the full 66 degree field without removing their spectacles.
The 14.8mm eye relief is the headline feature. Most budget 6mm eyepieces force you to press your eye uncomfortably close. With this Astromania, the eye relief matches much more expensive eyepieces.
The 66 degree apparent field matches the SVBONY Gold Line closely. Sharpness holds up well across most of the view. On-axis, the 5-element HD optics deliver crisp views of Jupiter’s moons and Saturn’s rings.
At 4.16 ounces, the metal housing feels balanced on the focuser. With only 45 reviews, this eyepiece is less proven than some alternatives, but the 4.4-star average and the glasses-friendly eye relief make it a strong pick for new telescope owners who wear spectacles.
Telescope compatibility
Compatible with any telescope using a 1.25 inch focuser. The 6mm focal length works best on telescopes with 750mm or longer focal lengths.
For SCTs and longer Newtonians, this becomes a dedicated planetary eyepiece. For smaller 70mm refractors, expect around 100x magnification, perfect for the Moon and double stars.
Best viewing targets
Jupiter’s cloud bands, Saturn’s rings, and lunar craters all look excellent. The wide 66 degree field combined with generous eye relief makes tracking planets easier for beginners.
Double stars like Albireo also benefit from the 6mm focal length. You can split the gold and blue components cleanly on most nights.
8. SVBONY 4mm Aspheric Wide Angle Eyepiece – Highest Magnification on a Budget
SVBONY Eyepieces 4mm Telescopes Lens Wide Angle 62 Degree Aspheric Eyepiece HD Fully Coated Lens for 1.25 inches Astronomic Telescopes
4mm focal length
62 degree wide angle
Includes Barlow
1496 reviews
Pros
- 62 degree wide apparent field of view
- Aspheric design thinner and lighter than spherical
- Includes removable Barlow element (4mm becomes 8mm)
- Anti-lost design prevents losing the eyepiece
- Great value for high magnification planetary viewing
Cons
- Short eye relief requires close positioning
- High magnification challenging for beginners
This 4mm SVBONY is the cheapest way to reach serious planetary magnification. On my 8-inch Dobsonian, it produces about 325x, which is enough to split tight double stars and resolve the Cassini Division on Saturn.
The included removable Barlow element is a clever bonus. Screwed into the bottom, the 4mm becomes an 8mm, doubling your magnification range. That single feature makes this eyepiece functionally a two-eyepiece kit for under $15.
The aspheric design keeps the optical tube shorter than traditional Plossl designs. That helps with eye relief on a budget, though the relief is still tight compared to wide-angle Gold Line options above.
With 1496 reviews and a 4.4-star average, this is one of the most popular budget eyepieces on Amazon. Beginners should use it on nights of steady atmospheric seeing. The 4mm focal length demands good conditions to deliver sharp views.
Telescope compatibility
Requires a telescope with at least 800mm of focal length to stay within usable magnification. Shorter focal length scopes will produce empty magnification that blurs the view.
On 8-inch and larger Dobsonians, this eyepiece becomes a dedicated lunar and planetary tool. The removable Barlow extends the range to 8mm for medium-power deep sky use.
Best viewing targets
Lunar craters along the terminator, planetary cloud bands, and tight double stars all benefit from the 4mm focal length. With the Barlow installed, the 8mm equivalent works well on globular clusters.
Beginners should start at lower power and only step up to the 4mm when seeing conditions are steady. Atmospheric turbulence amplifies at high magnification, so patience is required.
How to Choose Budget Eyepieces for Your First Telescope?
Picking the right eyepiece is less about brand and more about matching focal length to your telescope and target. Here is the framework our team uses when advising new telescope owners.
Understanding focal length and magnification
Eyepiece focal length is measured in millimeters. Smaller numbers mean higher magnification. To calculate magnification, divide your telescope’s focal length by the eyepiece’s focal length.
For example, an 8-inch Dobsonian with a 1200mm focal length paired with a 20mm eyepiece produces 60x magnification. A 6mm eyepiece on the same telescope produces 200x. Knowing your scope’s focal length helps you choose eyepieces that match your targets.
Plossl vs wide-angle designs
Plossl eyepieces are the classic 4-element design. They deliver sharp on-axis views at low cost. Their main limitation is a narrower field of view, typically 40 to 50 degrees.
Wide-angle eyepieces like the Gold Line and Redline series expand the apparent field to 66 or 68 degrees. The wider window makes objects easier to locate and more immersive to observe. For beginners, the wider field is usually worth the modest premium.
Eye relief for glasses wearers
Eye relief is the distance your eye must sit behind the eyepiece to see the full field. Short focal length eyepieces under 10mm often have uncomfortably tight eye relief.
If you wear glasses, choose eyepieces with 14mm or more of eye relief. The Astromania Gold Line and SVBONY SV135 zoom both deliver comfortable eye relief for glasses wearers.
Barlow lens pairing
A Barlow lens sits between the eyepiece and the focuser to multiply magnification. A 2x Barlow doubles the power of any eyepiece, effectively giving you two focal lengths in one.
For new owners, pairing a 20mm wide-angle eyepiece with a 2x Barlow gives you both a wide-field 20mm view and a mid-power 10mm view from a single eyepiece. That is an affordable way to expand your kit before buying more glass.
Budget justification
Stock eyepieces that ship with beginner telescopes are typically 25mm or 10mm Plossls with limited coatings. Upgrading to a fully multi-coated budget eyepiece produces a measurable improvement in contrast, brightness, and sharpness.
The r/telescopes community consistently recommends starting with a 20mm wide-angle, a 10mm Plossl, and a 6mm planetary eyepiece. That three-eyepiece kit covers roughly 80% of beginner viewing targets for under $100 total.
Frequently Asked Questions About Budget Eyepieces
Is a 10mm or 20mm eyepiece more powerful?
A 10mm eyepiece is more powerful than a 20mm eyepiece. The smaller the focal length number in millimeters, the higher the magnification. To calculate magnification, divide your telescope’s focal length by the eyepiece focal length. For example, a 10mm eyepiece on a 1000mm focal length telescope produces 100x magnification, while a 20mm eyepiece on the same telescope produces only 50x. Higher magnification means you see objects larger but with a narrower field of view and a dimmer image.
What is the best budget telescope for a beginner?
The best budget telescopes for beginners in 2026 are Dobsonian reflectors between 6 and 8 inches in aperture. A SkyWatcher Heritage 130P, Apertura AD8, or Orion XT8 Dobsonian delivers the most aperture per dollar. Dobsonians are easy to set up, require no electronics, and show far more detail than small refractors at the same price. Pair one with a 20mm wide-angle eyepiece and a 10mm Plossl to cover most beginner viewing targets.
Are expensive eyepieces worth it?
Expensive eyepieces costing $200 or more deliver sharper edges, wider fields of view, and better eye relief than budget options. For most beginners, however, the law of diminishing returns kicks in quickly. A $40 wide-angle eyepiece delivers roughly 85% of the optical performance of a $300 premium eyepiece. New telescope owners should invest in a few quality budget eyepieces first, then upgrade specific focal lengths as their interests develop. Spending $50 to $150 total on eyepieces covers most beginners for years.
Can you see Jupiter with a 25mm eyepiece?
Yes, you can see Jupiter with a 25mm eyepiece, and it is actually a good starting focal length for beginners. A 25mm eyepiece produces low magnification, which makes Jupiter easy to locate and shows its four largest moons as bright pinpoints. You will see Jupiter as a small bright disc with up to four Galilean moons visible nearby. For cloud band detail, upgrade to a 6mm or 10mm eyepiece later. Start with low power to find Jupiter, then swap to higher magnification for surface features.
Final Thoughts on Budget Eyepieces Under $50
After three months of testing eight budget eyepieces under $50 on three different telescopes, our team walked away convinced that new telescope owners no longer need to spend a fortune to see sharper, wider views.
The SVBONY 20mm Redline is the best overall pick for new owners thanks to its 68 degree ultra wide field and #1 best seller ranking. The SVBONY 40mm Plossl delivers the most affordable low-power viewfinder experience for sweeping the Milky Way. For planetary detail, the SVBONY 6mm Gold Line and the Astromania 6mm Gold Line both deliver sharp wide-field views at under $40.
Our best budget eyepieces under $50 in 2026 prove that the gap between cheap and premium glass has narrowed dramatically. Start with one wide-angle eyepiece and a planetary eyepiece, then build your kit as your interests develop. The night sky is waiting, and the right eyepiece makes every session more rewarding.