10 Best Telescope Eyepieces Under $100 for Flexible Stargazing in 2026

The right eyepiece can make a budget telescope feel far more capable. This selection of telescope eyepieces under $100 covers versatile zooms, practical Plossl sets, wide-angle designs, and high-power planetary options.

Whether you want easier magnification changes, a starter collection, or sharper views of the Moon and planets, the best choice depends on your telescope’s compatibility, focal length, and observing style.

Best 10 Telescope Eyepieces Under 100 Picks for 2026

Best All-Around Zoom – SVBONY SV135 7-21mm Zoom Eyepiece

For shoppers comparing telescope eyepieces under 100, the SVBONY SV135 is a flexible option when you want several focal lengths without carrying multiple eyepieces. Its 7-21mm zoom range covers lower- and higher-power viewing in a standard 1.25-inch format.

Best For: Observers who want one versatile eyepiece for lunar, planetary, deep-sky, and landscape viewing.

Pros:

• Adjustable 7-21mm focal length can replace several fixed eyepieces.
• Fully multi-coated, six-element optical design is intended to provide bright, high-contrast views.
• 18mm-16.3mm eye relief and a rubber eyeguard can suit extended viewing, including for some eyeglass wearers.
• 40°-57° field of view and a durable metal body.

Cons:

• It requires a telescope with a standard 1.25-inch eyepiece holder.
• As a zoom eyepiece, its field of view changes across the focal-length range.

The SV135 is a practical space-saving choice for beginners and casual observers who value convenience. Its broad zoom range and comfortable eye relief make it especially useful for switching between targets without repeatedly changing eyepieces.

Best Starter Set – Astromania 4/10/25mm Plossl Eyepiece Kit

Among telescope eyepieces under 100, this Astromania kit stands out for including multiple focal lengths and a 2x Barlow lens in one package. The 4mm, 10mm, and 25mm Plossl eyepieces give you low, medium, and high magnification options for varied observing sessions.

Best For: Beginners who want a basic magnification range and an included Barlow lens for lunar and planetary viewing.

Pros:

• Includes 4mm, 10mm, and 25mm 1.25-inch Plossl eyepieces.
• The 2x Barlow lens creates additional power combinations.
• 50° apparent field of view and fully coated optics support sharp, higher-contrast views.
• Threaded eyepieces accept standard 1.25-inch filters, while the Barlow includes T-threads for camera attachment.

Cons:

• The 4mm eyepiece may provide very high magnification depending on the telescope.
• The set is limited to telescopes that accept 1.25-inch accessories.

This is a well-rounded accessory kit rather than a single specialized eyepiece. It offers useful coverage for wide star fields, lunar craters, and bright planets while giving new observers room to experiment with different powers.

Best Brand-Supported Zoom – Celestron 8-24mm Zoom Eyepiece

If you are shopping for telescope eyepieces under 100 and prefer a single variable-power accessory, the Celestron 8-24mm Zoom Eyepiece offers smooth adjustment across a useful focal-length range. It fits standard 1.25-inch telescope and spotting-scope holders and can reduce the need for frequent eyepiece changes.

Best For: Observers who want convenient variable magnification backed by a two-year warranty and brand support.

Pros:

• 8-24mm zoom range provides low- to high-power flexibility.
• Fully multi-coated optics are designed to improve brightness, color, and contrast.
• Accepts 1.25-inch filters and includes T-threads for astrophotography use.
• Includes a two-year US warranty and support from Celestron.

Cons:

• It is intended for telescopes or spotting scopes with 1.25-inch eyepiece holders.
• A single zoom eyepiece may not provide the same fixed focal-length specialization as a dedicated set.

The Celestron is a straightforward convenience pick for observers who want one eyepiece that covers multiple powers. Its 8-24mm range, filter compatibility, and warranty make it an appealing option for general-purpose viewing.

Best Accessory Bundle – Celticbird 8-Piece Plossl Telescope Kit

For buyers comparing telescope eyepieces under 100, the Celticbird kit provides more than standalone optics. It combines 6mm, 12.5mm, and 20mm Plossl eyepieces with a 2x Barlow lens, four filters, and a lockable aluminum case for a broad starter setup.

Best For: New observers who want eyepieces, planetary filters, camera accessories, and storage in one package.

Pros:

• Includes three focal lengths for different planetary, lunar, wide-field, and deep-sky applications.
• The 2x Barlow lens doubles the magnification of compatible 1.25-inch eyepieces.
• Moon, red, blue, and yellow filters can help with bright lunar and planetary observation.
• Includes T2-threaded camera accessories and a portable lockable aluminum case.

Cons:

• The kit is limited to telescopes that accept 1.25-inch accessories.
• It includes more accessories than shoppers seeking only a single eyepiece may need.
• Filters and Barlow use depend on the telescope’s available magnification and compatibility.

The Celticbird bundle is best viewed as an all-in-one expansion kit. Its combination of focal lengths, filters, Barlow, camera fittings, and case offers strong versatility for beginners who want to explore both visual astronomy and basic astrophotography.

Versatile Starter Set – SVBONY 4mm, 10mm & 23mm Eyepiece Set

If you want telescope eyepieces under 100 that cover several viewing situations, this three-piece SVBONY set is a practical option. Its 4mm, 10mm, and 23mm focal lengths support higher-power views of bright objects as well as broader views of clusters and nebulae.

Best For: Beginners who want multiple focal lengths for lunar, planetary, and deep-sky observing.

Pros:

• Includes 4mm, 10mm, and 23mm eyepieces for flexible magnification.
• 62-degree field of view makes objects easier to locate and frames extended targets well.
• Fully multi-coated, aspherical optics and internal blackening are designed to improve brightness, clarity, and contrast.
• Standard 1.25-inch barrel and filter thread suit compatible astronomical telescopes and filters.

Cons:

• Requires a telescope with a 1.25-inch focuser.
• The 4mm eyepiece can produce excessive magnification depending on the telescope’s aperture and focal length.
• Buyers should verify compatibility and calculate magnification before ordering.

This is the most flexible choice of the three if you need a small eyepiece collection rather than one specialized focal length. Confirm your telescope specifications first, especially because the manufacturer advises keeping magnification below twice the objective aperture.

Planetary Detail Pick – Celestron Omni 4mm Plossl Eyepiece

For shoppers comparing telescope eyepieces under 100, the Celestron Omni 4mm is a focused high-power option. Its four-element Plossl design is intended for detailed planetary viewing, while the 1.25-inch, filter-threaded barrel works with compatible telescope accessories.

Best For: Observers seeking a dedicated high-power eyepiece for planetary detail.

Pros:

• Four-element Plossl optical design offers an affordable, dedicated option.
• Rubber eyecup can improve viewing comfort and accommodate eyeglasses when folded down.
• Blackened lens edges and matte barrel help prevent internal reflections.
• Threaded 1.25-inch barrel accepts compatible filters.

Cons:

• Only one 4mm focal length is included, so it does not provide lower-power viewing flexibility.
• High magnification may not suit every telescope or observing condition.
• Requires a compatible 1.25-inch focuser.

The Omni is a sensible choice when your priority is high-power planetary observation rather than an all-purpose set. As with any 4mm eyepiece, check the telescope’s focal length and aperture to ensure the resulting magnification is usable.

Wide-View Deep-Sky Option – SVBONY 40mm Plossl Eyepiece

This SVBONY 40mm Plossl is worth considering when browsing telescope eyepieces under 100 for broad, lower-power views. Its four-element design and 40-degree apparent field of view suit lunar observing, medium-sized clusters, nebulae, and other deep-sky targets.

Best For: Wide-field visual observing of the Moon, star clusters, and deep-sky objects.

Pros:

• 40mm focal length and 40-degree field of view support broad views.
• Four-element, fully multi-coated optics are designed for contrast and clarity.
• Fold-down rubber eyeguard helps accommodate eyeglass wearers and block stray light.
• Durable metal housing, filter thread, and included plastic case add practical convenience.

Cons:

• Its fixed 40mm focal length does not provide high-power planetary magnification.
• Compatible with telescopes and accessories using a 1.25-inch barrel.
• The 40-degree field is narrower than the 62-degree field offered by the SVBONY set.

Choose this model if you primarily want a comfortable, broad-view eyepiece for scanning the sky and framing larger targets. It complements, rather than replaces, a shorter focal-length eyepiece for detailed planetary work.

Best Multi-Focal Value – Starboosa 4mm, 10mm & 20mm Eyepiece Set

For shoppers comparing telescope eyepieces under 100, this Starboosa set offers three focal lengths in a standard 1.25-inch format. The 4mm, 10mm, and 20mm options make it easier to switch between higher- and lower-magnification views of the Moon, planets, star clusters, and other sky targets.

Best For: Beginners and observers who want a versatile three-eyepiece starter kit.

Pros:

• Includes 4mm, 10mm, and 20mm focal lengths for different viewing needs.
• Compatible with reflector and refractor telescopes using a 1.25-inch mount.
• Fully multi-coated optical glass is designed for clear images and contrast.
• Soft eyecups and a one-year warranty add practical convenience.

Cons:

• A three-piece kit offers less specialization than individually selected eyepieces.
• The 4mm focal length may be more demanding to use under less steady viewing conditions.

This is a practical choice when you want broad focal-length coverage without assembling a collection one eyepiece at a time. Confirm that your telescope accepts 1.25-inch accessories before buying.

Best Wide-Field Option – SVBONY 20mm 68° UW Redline Eyepiece

Among telescope eyepieces under 100, this SVBONY 20mm model stands out for its 68-degree wide field of view. Its lower magnification is suited to scanning star fields, locating targets, and viewing larger deep-sky objects such as nebulae and star clusters.

Best For: Wide-field viewing, deep-sky scanning, and eyeglass wearers using 1.25-inch telescopes.

Pros:

• 68-degree field of view helps frame broad celestial targets.
• 20mm focal length provides lower magnification for star fields and deep-sky objects.
• Fully multi-coated optics and an internally blackened housing are designed to improve contrast.
• Fold-down rubber eye guard can help block stray light and accommodate eyeglasses.

Cons:

• Its 20mm focal length is not intended for high-magnification planetary detail.
• Compatibility is limited to telescopes and accessories with a 1.25-inch eyepiece mount.

This eyepiece makes a useful low-power complement to a shorter-focal-length planetary eyepiece. Its filter threading also allows connection to standard 1.25-inch astronomy filters.

Best Simple Pick – Astromania 4mm Plossl Eyepiece

For buyers researching telescope eyepieces under 100, the Astromania 4mm Plossl is a focused single-eyepiece option for higher-magnification observing. Its four-element, fully multi-coated design and 50-degree field of view are suited to lunar and planetary viewing through a compatible 1.25-inch focuser.

Best For: Experienced observers and suitable telescopes needing a short-focal-length eyepiece for the Moon and planets.

Pros:

• 4mm focal length is designed for higher-magnification observations.
• Four-element Plossl optics and full multi-coating support image clarity and color correction.
• 50-degree field of view offers a useful balance of viewing area and sharpness.
• Fold-down rubber eyeguard, filter threading, and dust caps add convenience.

Cons:

• A 4mm eyepiece is less versatile than a kit with multiple focal lengths.
• Short focal lengths can require favorable viewing conditions and accurate focusing.
• It is compatible with 1.25-inch focusers, not larger eyepiece formats.

This Astromania model is best considered a targeted addition rather than an all-purpose starter eyepiece. Check your telescope’s focal length and stability before selecting a 4mm option for high-power use.

How We Picked These Telescope Eyepieces Under 100

We focused on affordable eyepieces with useful focal-length coverage, common 1.25-inch compatibility, and designs suited to typical beginner and intermediate telescopes. The selection includes individual eyepieces, zoom models, and kits with multiple focal lengths or accessories. We also considered viewing comfort, apparent field of view, optical coatings, and whether each option serves a clear purpose rather than simply adding more accessories.

Before buying, confirm that your telescope accepts 1.25-inch eyepieces and check whether the listed price still fits your budget. Specifications and package contents can vary by seller.

Quick Comparison

Type	Best For	Main Advantage	Trade-Off
Zoom eyepiece	Flexible observing	Several magnifications in one	Narrower field at higher power
Plossl set	New telescope owners	Useful focal-length range	Basic eye relief, especially at short focal lengths
Wide-angle eyepiece	Moon, star fields, and deep sky	More immersive view	Edge performance may vary by telescope
Short focal-length eyepiece	Planets and lunar detail	Higher magnification	Needs steady skies and accurate focusing

Key Buying Factors for Telescope Eyepieces Under 100

Focal Length and Magnification

Magnification equals your telescope’s focal length divided by the eyepiece focal length. Longer focal lengths, such as 20mm to 40mm, provide lower-power views that are easier to aim and useful for large targets. Shorter focal lengths, such as 4mm to 10mm, produce higher power for lunar and planetary work. Extremely high magnification can make the image dim, soft, and difficult to keep centered.

Barrel Size and Compatibility

Most products here use a 1.25-inch barrel, a common size for entry-level and many midrange telescopes. Verify your focuser or diagonal size before ordering. A Barlow lens can increase magnification, but it also magnifies focusing errors and atmospheric distortion.

Field of View and Eye Relief

A wider apparent field can make tracking easier and create a more expansive view, particularly with manual mounts. Eye relief matters if you wear glasses; short focal-length Plossl eyepieces can require close eye placement. Zoom eyepieces offer convenience, though their field of view often changes across the zoom range.

Optical Coatings and Build

Fully multi-coated optics can improve light transmission and reduce reflections. Look for secure caps, smooth focus or zoom movement, and a well-finished barrel. These details affect everyday usability as much as the focal-length specifications.

Who Should Buy Which Telescope Eyepieces Under 100?

Choose a zoom eyepiece if you want one adaptable accessory for finding and examining targets. A multi-eyepiece kit is a practical starting point when you own no additional lenses. Choose a 20mm or 40mm model for wide, lower-power views of the Moon, open clusters, and brighter deep-sky objects. A 4mm or 10mm eyepiece is better for experienced users who understand their telescope’s realistic magnification limits and regularly observe planets.

For most beginners, a balanced set with low, medium, and high magnifications offers more value than buying several nearly identical short focal-length eyepieces.