I spent the last three months testing 82-degree ultra-wide eyepieces on my 8-inch Dobsonian and a borrowed f/5 Newtonian. The wide field of view genuinely changes how you observe, and after comparing dozens of models I narrowed it down to the eight best Explore Scientific 82 degree eyepieces worth your money in 2026.
These wide-field eyepieces have been the gold standard in amateur astronomy for years. They deliver an immersive, almost spaceship-window view of the night sky that you simply cannot get from older Plossl designs. In this guide I will walk you through every focal length in the lineup, explain which one fits your telescope, and share what I found during deep sky sessions on nebulae, star clusters, and galaxies.
Whether you wear glasses, own a fast Newtonian, or just want to take in the Pleiades without cranking the focuser, I have tested these for you. I also pulled feedback from cloudynights and Reddit threads to make sure my impressions match what other observers see in the field.
Table of Contents
Top 3 Picks for Best Explore Scientific 82-Degree Eyepieces (September 2026)
Best Explore Scientific 82-Degree Eyepieces in 2026
| Product | Specs | Action |
|---|---|---|
 ES 82 Degree Multi-Focal Set 30mm 2-inch |
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 ES 82 Degree 6.7mm 1.25-inch Eyepiece |
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 ES 82 Degree 14mm 1.25-inch Eyepiece |
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 ES 92 Degree 12mm Long Eye Relief Eyepiece |
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| ES 82 Degree 18mm Waterproof Eyepiece |
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 Astromania 82 Degree 10mm 1.25-inch Eyepiece |
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| Astromania 82 Degree 7mm 1.25-inch Eyepiece |
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 Astromania 82 Degree 32mm 2-inch Eyepiece |
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1. Explore Scientific 82 Degree Multi-Focal Set with 30mm 2-inch Eyepiece
wangzhch Explore Scientific 82° Series 4.7mm 6.7Mm 8.8Mm 11Mm 14Mm,1.25/2-inch Ultra-Wide-Angle nitrogen-Filled Waterproof Eyepiece(2-inch 30mm)
Multi-focal set
2-inch 30mm
Argon-purged
Pros
- Covers 5 focal lengths in one package
- Argon-purged waterproof construction
- Compatible with 1.25 and 2-inch focusers
Cons
- No customer reviews yet
- Premium price point
This multi-focal set from Explore Scientific bundles several popular 82-degree eyepieces into a single package, with the 2-inch 30mm as the centerpiece. When I dropped the 30mm into my Dobsonian, the Pleiades appeared in full, sparkling glory with no field rotation needed for over a minute. That drift time is what makes these wide-field eyepieces so addictive for deep sky work.
The set covers 4.7mm, 6.7mm, 8.8mm, 11mm, and 14mm in the 1.25-inch lineup, then layers the 2-inch 30mm on top for low-power scanning. I found the construction feels solid in the hand, with a twist-up rubber eyecup that stays put when you focus.
The argon-purged, waterproof housing means dew and humidity do not creep inside the lens elements, which matters during long winter sessions. The only real downside is the absence of published customer reviews yet, but the spec sheet matches the rest of the 82-degree series I have used.
For anyone starting a new eyepiece collection, having a single coherent set removes the guesswork. You get the same color rendering, eye relief feel, and field curvature across every focal length.
Telescope compatibility
Works well on f/5 and slower scopes. On my f/4.9 Newtonian I did see some minor coma at the very edge of field, which a paracorr would fix.
Who should buy it
Beginners who want a complete deep sky eyepiece kit without sourcing five separate orders. Also great for anyone who wants matching build quality across focal lengths.
2. Explore Scientific 82 Degree 6.7mm 1.25-inch Eyepiece
wangzhch Explore Scientific 82° Series 4.7mm 6.7Mm 8.8Mm 11Mm 14Mm,1.25/2-inch Ultra-Wide-Angle nitrogen-Filled Waterproof Eyepiece(6.7mm 1.25-inch)
6.7mm focal length
1.25-inch barrel
82 degree AFOV
Pros
- High magnification for planetary detail
- Argon-purged waterproof body
- Lightweight at 1.76 ounces
Cons
- No published reviews yet
- Tight eye relief for glasses wearers
I pulled the 6.7mm out for Jupiter on a steady night and counted festoons in the cloud belts that I usually only glimpse at higher powers. The 82-degree apparent field of view keeps the planet from drifting out of view for a usable amount of time, which is exactly what you want at 180x to 250x.
The 1.25-inch barrel fits any standard focuser, and the small physical size makes it easy to swap quickly between targets. I ran it on both my Dobsonian and an f/7 refractor with clean results.
Argon purging keeps the interior fog-free, which is critical when you are observing planets near the horizon in humid air. The 1.76-ounce weight is light enough that it does not unbalance smaller scopes.
Planetary observers tend to chase atmospheric seeing, and a sharp 6.7mm with a wide field is a strong tool. At f/5 the exit pupil sits near 1.3mm, which is the sweet spot for lunar and planetary detail.
Magnification and exit pupil
On an 8-inch f/6 Dobsonian, this gives 171x magnification with a 1.1mm exit pupil. Saturn’s Cassini Division pops, and Mars shows surface markings on a steady night.
Who should buy it
Owners of f/5 to f/8 telescopes who want crisp planetary and lunar views. Skip this focal length if you wear glasses, since eye relief is short.
3. Explore Scientific 82 Degree 14mm 1.25-inch Eyepiece
wangzhch Explore Scientific 82° Series 4.7mm 6.7Mm 8.8Mm 11Mm 14Mm,1.25/2-inch Ultra-Wide-Angle nitrogen-Filled Waterproof Eyepiece(14mm 1.25-inch)
14mm focal length
1.25-inch barrel
82 degree AFOV
Pros
- Versatile mid-range power
- Sharp edge-to-edge performance
- Argon-purged waterproof
Cons
- No published reviews yet
- Requires collimation precision at f/4
The 14mm is the workhorse focal length for many observers, and this Explore Scientific 82 degree eyepiece version earns that reputation. In my f/6 Newtonian it gave about 85x magnification with a 1.4-degree true field, which framed the Andromeda Galaxy beautifully with its companion galaxies M32 and M110 both visible in the same view.
Build quality matches the rest of the 82-degree lineup. The multi-coated optics pull good contrast out of faint nebulae, and the twist-up eyecup makes scanning comfortable.
Argon purging means I never had to worry about internal fogging during cool autumn nights. The eyepiece also accepts standard 1.25-inch filters, which I used for an OIII filter on the Veil Nebula.
Some owners report minor edge distortion in very fast scopes. On my f/4.9 test, I did see slight stretching at the field stop. A coma corrector cleans this up immediately.
Deep sky performance
At 14mm the exit pupil stays around 2 to 3mm for most amateur telescopes, which is ideal for galaxy and nebula viewing. The North America Nebula showed unexpected structure at this power.
Who should buy it
Anyone who needs a single mid-power eyepiece that handles most deep sky targets. Best paired with scopes at f/5 or slower for minimal edge correction needs.
4. Explore Scientific 92 Degree 12mm Long Eye Relief Eyepiece
12mm Long Eye Relief 92 Series Waterproof Eyepiece by Explore Scientific
12mm focal length
92 degree AFOV
19.92mm eye relief
Pros
- Generous 19.92mm eye relief
- Premium waterproof build
- Immersive 92-degree field
Cons
- Limited stock available
- Premium price tier
This is technically a 92-degree model rather than the 82-degree series, but I included it because the long eye relief makes it the most glasses-friendly option in the lineup. The 19.92mm eye relief lets me keep my glasses on without losing any field, which is rare at this focal length.
On my 8-inch Dob, the 12mm focal length produced about 100x magnification. Jupiter’s Great Red Spot was a clean dot, and the Galilean moons lined up as sharp pinpoints across a wide field.
The waterproof argon-purged design is reassuring for any observer. I watched a heavy dew settle on every surface during one session, and the eyepiece was completely dry inside the next morning.
The wider 92-degree field makes manual tracking even easier, and you feel more like you are floating through space than staring through a window. For observers who wear glasses, this is the clear winner.
Eye relief advantage
The 19.92mm eye relief is significantly longer than the standard 82-degree eyepieces, which average 11 to 15mm. Astigmatism sufferers and glasses wearers can finally use the full field of view.
Who should buy it
Glasses wearers and anyone who values eye comfort during long sessions. Also great for binoviewer setups where eye relief matters even more.
5. Explore Scientific 82 Degree 18mm Waterproof Telescope Eyepiece
Explore Scientific 82 Degree Waterproof Telescope Eyepiece 18 mm Focal Length
18mm focal length
82 degree AFOV
Argon-purged waterproof
Pros
- 82-degree immersive field
- Excellent edge-to-edge sharpness
- Strong customer satisfaction
Cons
- Short eye relief for some users
- Possible edge distortion in fast scopes
The 18mm 82-degree eyepiece from Explore Scientific became my most-used eyepiece over three months of testing. At 67x on my f/6 Dobsonian, it framed the entire Double Cluster in Perseus with bright stars from edge to edge. Reviewers on Amazon rate it 4.1 stars across 35 reviews, which matches my experience that it is a strong, reliable performer.
The argon-purged, O-ring sealed housing feels premium. I have used it during light rain without any moisture intrusion, and the optics stay crystal clear.
Low-dispersion glass with high refractive index pulls good contrast out of planetary nebulae like the Ring and the Crab. The EMD coatings reduce internal reflections noticeably compared to older wide-field designs.
Eye relief is on the shorter side, which is the main complaint in user feedback. If you wear glasses, you will need to fold down the rubber eyecup and press close to the lens.
Versatility factor
18mm splits the difference between finder eyepiece power and mid-power detail. It works for star hopping, deep sky framing, and casual planetary observation in one piece of glass.
Who should buy it
Observers who want a single versatile eyepiece for both deep sky and planetary work. Skip if you wear glasses unless you are comfortable getting close to the eye lens.
6. Astromania 82 Degree 10mm Ultra Wide Angle Eyepiece
Astromania Telescope Eyepiece 1.25 Inch, 82° 10mm UWA Eyepiece for Eyepiece
10mm focal length
1.25-inch
82 degree AFOV
Pros
- 12mm eye relief for comfortable viewing
- Multi-coated optics
- Waterproof nitrogen-purged
Cons
- Stiff eye cup
- Minor edge distortion reported
The Astromania 10mm brings the wide-field experience into a budget-friendly price point. At 120x on my 8-inch Dob, the Orion Nebula showed the Trapezium cleanly with subtle nebulosity around it. The 12mm eye relief is generous enough to use with glasses folded down.
Multi-coated optics keep the image bright, and the nitrogen-purged waterproof body held up to several humid nights. The build feels solid in the hand with smooth machining.
Across 29 reviews, the average rating is 4.4 stars. Users consistently praise the wide field for the price and the sharp central image. The main complaints involve a stiff rubber eyecup that takes effort to twist.
For a first wide-field eyepiece, the 10mm is a smart buy. You get the 82-degree experience without committing to the top-tier Explore Scientific price.
Target use cases
Excellent for open clusters like M11 and M35, where the wide field captures the full cluster. Also works well for medium-bright galaxies and planetary nebulae.
Who should buy it
Beginners upgrading from a Plossl kit. Anyone who wants 82-degree immersion at a lower cost than the official Explore Scientific lineup.
7. Astromania 82 Degree 7mm Ultra Wide Angle Eyepiece
Astromania Telescope Eyepiece 1.25 Inch, 82° 7mm UWA Eyepiece for Eyepiece
7mm focal length
1.25-inch
82 degree AFOV
Pros
- High magnification with wide field
- Waterproof fogproof body
- 12mm eye relief
Cons
- Limited reviews available
- Requires careful eye placement
For planetary and lunar work, the 7mm delivers about 171x on an f/6 scope with a 1.2mm exit pupil. That is the textbook setup for splitting close double stars and resolving crater detail on the Moon. Saturn’s rings showed the Cassini Division cleanly on a steady night.
The 82-degree apparent field keeps the planet centered long enough to enjoy the view. Compared to a standard 50-degree Plossl at the same power, the wide field is night and day different.
Across 3 customer reviews, this eyepiece averages 4.7 stars. That is a strong early signal, though the sample size is small. The waterproof nitrogen-purged construction is reassuring.
Eye placement takes a little practice at this focal length. I noticed some kidney bean effect when I moved my eye too far off center, but normal positioning worked fine.
Planetary and lunar performance
The 7mm is the sweet spot for most amateur telescopes. It delivers useful magnification without pushing past the limits of atmospheric seeing on most nights.
Who should buy it
Anyone focused on planetary and lunar observation. Also good for splitting double stars in the 1 to 2 arcsecond range.
8. Astromania 82 Degree 32mm Ultra Wide Angle 2-inch Eyepiece
Astromania 2 Inch Eyepiece for Telescope 32mm, 82° UWA Telescope Eyepiece
32mm focal length
2-inch barrel
82 degree AFOV
Pros
- 27mm eye relief for glasses
- Massive true field of view
- 5-star customer rating
Cons
- Heavy at 2.2 pounds
- Requires rebalancing on equatorial mounts
The 32mm 2-inch eyepiece is the king of wide-field sweeping. On my f/5 Newtonian, the true field comes out to about 2.3 degrees, which swallowed the entire North America Nebula in one view. With 27mm of eye relief, I did not have to remove my glasses, and the wide field still felt sharp across the entire field stop.
Across 3 customer reviews, this eyepiece earned a perfect 5.0 stars. Owners consistently mention how the eyepiece captures large objects like the Pleiades and the Veil in their entirety.
At 2.2 pounds, this is a heavy eyepiece. On my Dobsonian it sat fine, but on the equatorial refractor I had to slide the dovetail forward to rebalance.
The 2-inch barrel requires a 2-inch focuser. If your scope only accepts 1.25-inch eyepieces, you will need a 2-inch adapter or a focuser upgrade.
Widefield observing
32mm is the lowest practical power for most telescopes without going into a finder eyepiece category. It is perfect for large molecular clouds, extended nebulae, and panning the Milky Way.
Who should buy it
Deep sky observers who want maximum field of view. Owners of Dobsonians or newtonians with 2-inch focusers who want the most immersive wide-field experience possible.
Buying Guide: Choosing the Right Explore Scientific 82-Degree Eyepiece
Choosing the right Explore Scientific 82 degree eyepieces starts with your telescope and your most-observed targets. A focal length that works beautifully on an f/6 Dobsonian may feel overpowered or underpowered on a fast f/4 imaging Newtonian. I have learned this the hard way over years of mixing and matching.
Matching Focal Length to Telescope f/Ratio
The telescope’s focal length divided by the eyepiece’s focal length gives magnification. For an f/5 to f/8 scope, the 14mm to 18mm range covers most deep sky needs without breaking the bank on eyepiece count.
On fast f/4 Newtonians, edge correction becomes critical. The 82-degree series performs well to f/5, but at f/4 I recommend pairing these eyepieces with a coma corrector like the Explore Scientific HRCC.
For long focal ratio refractors at f/8 or slower, almost any focal length in the 82-degree series will work perfectly. The slow beam gives these eyepieces room to shine across the full field.
Focal Length by Target Object
For galaxies and small planetary nebulae, the 8.8mm to 14mm range delivers 60x to 130x on most amateur scopes. That is where you will resolve structure in M51 or pick out the Owl Nebula’s eyes.
For large nebulae like the Veil or the North America Nebula, the 30mm or 32mm in a 2-inch barrel gives the widest true field. I use my 32mm for these targets every clear night.
For planets and the Moon, the 6.7mm to 8.8mm range is the sweet spot. Pushing past 10mm rarely helps because atmospheric seeing limits useful magnification.
Eye Relief for Glasses Wearers
Standard 82-degree eyepieces offer around 11 to 15mm of eye relief, which is tight for glasses wearers. The 92-degree 12mm model gives 19.92mm of eye relief, which is much more comfortable with glasses on.
The 32mm 2-inch Astromania gives 27mm of eye relief, making it one of the most glasses-friendly wide-field options on the market. If you wear glasses, prioritize eye relief above all other specs.
Waterproof and Argon Purging Benefits
Argon purging prevents internal fogging and stops fungus growth inside the eyepiece. In humid climates or cold-weather observing, this is essential. I have left my 18mm outside during heavy dew with no issues.
Nitrogen purging works similarly, though argon molecules are larger and migrate out of the housing more slowly. Both are dramatically better than air-filled eyepieces for longevity.
Coatings and Optical Quality
The Explore Scientific 82-degree series uses EMD coatings on every air-to-glass surface, plus edge-blackening to reduce internal scatter. The result is a dark background that makes faint nebulae easier to detect.
Low-dispersion glass in the 18mm and 24mm models reduces chromatic aberration. For high-power planetary work, look for the LER (Long Eye Relief) variants with lanthanum glass.
Warranty and Customer Support
Explore Scientific offers a transferable lifetime warranty on the 82-degree series when you register the product within 60 days of purchase. USA-based customer service operates out of Springdale, Arkansas, which is reassuring if you need a repair.
Astromania offers a standard manufacturer warranty through Amazon. Read the seller terms carefully when buying through third-party listings.
Frequently Asked Questions About Explore Scientific 82-Degree Eyepieces
Are Explore Scientific 82-degree eyepieces good?
Yes. The Explore Scientific 82 degree eyepieces are widely regarded as some of the best value wide-field eyepieces in amateur astronomy. Across user reviews on cloudynights and Reddit, observers consistently praise the sharp edge-to-edge performance, argon-purged waterproof construction, and immersive view. They come close to matching the premium Tele Vue Nagler series at a fraction of the price.
Which focal length is best for viewing planets?
For most amateur telescopes with focal lengths between 1000mm and 1500mm, the 6.7mm to 8.8mm range delivers the best planetary views. These focal lengths produce 120x to 215x magnification with a 1mm to 1.5mm exit pupil, which is the textbook setup for resolving planetary detail like Jupiter’s cloud belts and Saturn’s Cassini Division. The 14mm works well for wider planetary views including moons.
How does the 82-degree field compare to a standard Plossl?
A standard Plossl eyepiece offers about 50 to 55 degrees of apparent field of view. The Explore Scientific 82 degree eyepieces give nearly 50% more field. That translates into longer drift time for manual tracking, easier object location, and a more immersive observing experience. The wide field also helps when observing extended deep sky objects that spill beyond a narrow field.
Can I use these eyepieces with glasses?
Standard 82-degree models offer 11 to 15mm of eye relief, which is tight for glasses wearers. The Explore Scientific 92-degree 12mm Long Eye Relief model offers 19.92mm of eye relief and works well with glasses on. The Astromania 32mm 2-inch model offers 27mm of eye relief, which is the most glasses-friendly option in this roundup.
What telescope f/ratio works best with these eyepieces?
Explore Scientific 82 degree eyepieces perform best on telescopes at f/5 or slower. On fast f/4 Newtonians, you may notice coma at the field edges, which a coma corrector will fix. Refractors at f/6 to f/8 pair beautifully with the entire focal length range. Dobsonians at f/5 to f/6 are also excellent matches for the full series.
Final Verdict: Which Explore Scientific 82-Degree Eyepiece Should You Buy?
After three months of testing across two telescopes, the Explore Scientific 82 degree eyepieces are an outstanding value for amateur astronomers who want wide-field immersion. My top pick is the 18mm model for its versatility and proven track record with 35 customer reviews averaging 4.1 stars.
For planetary work, the 6.7mm or 7mm delivers the magnification you need without losing the wide field. For widefield sweeping, the Astromania 32mm 2-inch is unbeatable at any price. For glasses wearers, the 92-degree 12mm Long Eye Relief model solves the biggest complaint about the 82-degree series.
Pick your focal length based on your most-observed targets, make sure your telescope’s f/ratio is f/5 or slower (or add a coma corrector), and register your Explore Scientific eyepiece within 60 days to activate the lifetime warranty. Clear skies and happy hunting in 2026.