Tele Vue Plössl 8mm — image 1
Tele Vue

Tele Vue Plössl 8mm

A 8mm Tele Vue Plössl: a medium-high-power eyepiece for planets, globular cores and small planetary nebulae, from the reference Plössl, the four-element design executed to the standard every other Plössl is judged against.

71/ 100
Polaris Score
Optical quality · Immersion · Comfort · Value
See the breakdown ↓
What it's for
Low power · wide fieldHigh power · narrow field

Medium-high power. At 8mm this is a medium-high-power eyepiece for planets, globular cores and small planetary nebulae; it is not meant for framing large deep-sky objects.

Apparent Field
50°
Barrel Size
1.25"
Eye Relief
6mm
Focal Length
8mm
From$115

Lowest in 90 daysLowest ever tracked

Price tracked by PolarisObserved 102 timesTracking since Jul 2026

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The spacewalk

You don’t look at a field.
You look into the sky.

Every number on the spec sheet matters less than one feeling: how much sky wraps around your eye. Widen the apparent field and watch the black edge of the eyepiece slip away.

50° apparent field

At 50°, you are aware of the field edge, like looking down a short, comfortable tube.
Try this eyepiece on your own scope in the Simulator →
01What it's good at

What it's best at — and the trade-offs.

Reference-grade on-axis sharpness and contrast: the Plössl done exactly right.
Best at
✓Reference-grade on-axis sharpness and contrast: the Plössl done exactly right.
✓Reference-grade on-axis sharpness and contrast: the Plössl done exactly right.
✓At 8mm it lands squarely in medium-high power territory, exactly where planetary and lunar detail lives.
Trade-offs
!Short eye relief below about 12mm, the unavoidable Plössl compromise.
!A 50-degree field is narrow next to modern wide-fields.
!You pay a real premium over a budget Plössl for build and coatings, not extra field.
02In your telescope

One eyepiece. A different job in every scope.

60× in a small refractor, 254× in a long SCT

An eyepiece has no magnification of its own — the telescope decides. The same eyepiece becomes 60× and 50′ of sky in a little refractor, or 254× and a tight frame in a long SCT. Here’s what it does across common scopes.

Small apo refractor
480 mm · f/5.5
Magnification
60×
True field
50′
Exit pupil
1.5 mm
60× across a 50′ field at a 1.5mm exit pupil, crisp medium power for galaxies, clusters and planetary nebulae.
8-inch Dobsonian
1200 mm · f/6
Magnification
150×
True field
20′
Exit pupil
1.3 mm
150× across a 20′ field at a 1.3mm exit pupil, crisp medium power for galaxies, clusters and planetary nebulae.
12-inch Dobsonian
1500 mm · f/5
Magnification
188×
True field
16′
Exit pupil
1.6 mm
188× across a 16′ field at a 1.6mm exit pupil, crisp medium power for galaxies, clusters and planetary nebulae.
8-inch SCT
2032 mm · f/10
Magnification
254×
True field
12′
Exit pupil
0.8 mm
254× across a 12′ field at a 0.8mm exit pupil, high power for planets, the Moon and tight doubles.
Exit pupil is how wide the beam of light leaving the eyepiece is. Around 5–6 mm is bright and immersive under dark skies; push much past 6 mm and you waste light, and under light pollution a smaller exit pupil shows more contrast.
03In plain English

The numbers, in plain English.

8mm FL · 50° AFOV · 1.25"
Focal lengthHigh power
8mm
About 150x in an 8 inch f/5.9 Dobsonian and 254x in an 8 inch SCT. A strong planetary and double-star power, and the range where a simple four-element design gives away nothing to complex eyepieces on sharpness.
Apparent fieldClassic
50°
The traditional Plössl field. Modest by modern standards, but few elements mean very little scattered light, so contrast on the Moon and planets is excellent. In a manual telescope you will nudge often at this power.
Eye reliefVery tight
6mm
Six millimetres puts your eye almost against the lens, because Plössl eye relief scales with focal length and there is no way around that geometry. Glasses are impossible; many observers use a longer Plössl with a Barlow instead.
BarrelStandard
1.25"
Fits any focuser or diagonal, and the eyepiece is small and light enough to carry a whole set in a coat pocket.
OpticsReference simple design
Fully multi-coated
Four elements, fully multi-coated, made to a standard that has kept this design in production for decades. On axis it is as sharp as anything; what you give up is field width and eye comfort, not image quality.
04What comes alive

The targets this eyepiece was born for.

Jupiter and its moons, Saturn, The Moon, M13 globular cluster, The Ring and Cat’s Eye…
Jupiter and its moonsComes alive
Jupiter and its moons
Belt detail with room to watch the Galilean moons shift.
SaturnComes alive
Saturn
Rings, the Cassini gap, and Titan in the same field.
The MoonExcellent
The Moon
A high-power tour of rilles, domes and crater chains.
M13 globular clusterExcellent
M13 globular cluster
The core starts to resolve into a spray of suns.
The Ring and Cat’s Eye nebulaeComes alive
The Ring and Cat’s Eye nebulae
Small planetary nebulae take real magnification well.
Excellent
Double stars
Clean, contrasty splits of colorful pairs.
05Role in a collection

Where it sits in your eyepiece case.

Where it sits across 3 focal lengths

A good eyepiece collection isn’t a pile of glass — it’s two or three focal lengths that hand off from wide to tight. This is the anchor at the bottom of the ladder: the one you find and frame with. You buy it once, and it stays your low-power eyepiece for life.

32 mm
Low power · wide field
Find, frame and sweep. Your widest true field and the lowest useful magnification, the eyepiece you reach for first.
Veil Nebula · Pleiades · Milky Way star clouds
13 mm
Medium power · the workhorse
Where most deep-sky objects look their best, galaxies, globulars and planetary nebulae at a comfortable scale.
M13 · Ring Nebula · most galaxies
8 mmThis one
High power · detail
Planets, the Moon at the terminator, tight double stars and the smallest planetary nebulae. Steady-air nights only.
Jupiter · Saturn · lunar craters
06Build around it

What it pairs with.

The telescope · Pair it · Filter it
The telescope
What it goes into
Any 1.25-inch focuser
Fits essentially every telescope made.
Longer focal length scopes reward it
The higher the scope’s focal length, the more planetary scale you get from this eyepiece.
Pair it
What extends its range
A low-power finder eyepiece (~13mm)
Use the long eyepiece to locate and frame, then drop in this one for detail.
Filter it
What transforms the view
A neutral-density Moon filter
Tames the glare of a bright gibbous Moon at high power so detail returns.
07The Polaris Score

How it scores, and why.

71/100
71/ 100
Tele Vue Plössl 8mm

Judged as a medium-high-power eyepiece for planets, globular cores and small planetary nebulae, it earns its score on reference-grade on-axis sharpness and contrast: the plössl done exactly right. Tighter eye relief at this focal length is the main thing holding it back. It is honest about being a specialist, not an all-rounder.

Optical quality
86
Immersion
56
Comfort
42
Value
74

Polaris weighs how well the eyepiece does the job it was designed for — optics, immersion, comfort and value — never list price or brand.

08Who it's for

An honest fit check.

Observers who want a medium-high-power eyepiece for planets, globular cores and small…
Buy it if you
✓Observers who want a medium-high-power eyepiece for planets, globular cores and small planetary nebulae.
✓Observers happy to take their glasses off at the eyepiece.
✓Observers who value on-axis contrast over a sprawling field.
Look elsewhere if you
!Anyone who has looked through a wide-field eyepiece and cannot go back to a 52-degree tunnel.
!Eyeglass wearers, who will not comfortably reach the full field at this focal length.
!Anyone hoping to frame large nebulae; that is a job for a low-power eyepiece.
09The numbers

Full specifications.

4 measured and stated values
Optical
Focal Length8mm
Apparent Field50°
Comfort & handling
Eye Relief6mm
Fit & build
Barrel Size1.25"
Editor’s Take

Point it at a planet on a steady night and the case makes itself. This is where the Plössl earns its keep.

— The Skynocular verdict
10Alternatives

For a different goal, start here.

2 alternatives, each mapped to the goal it wins at
Wider, lower power

Tele Vue Plössl 11mm

The same optics with more true field, for framing larger objects and finding your way around.

→
Cross-shop

Tele Vue Delos

A natural alternative at a similar price point, if you want to compare field and feel before committing.

→