The 5 Best 4 mm Telescope Eyepieces (2023 reviews)

4 mm telescope eyepieces
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It is important to have the well suited 4 mm telescope eyepiece. In the following post, we will help you to select the best 4 mm telescope eyepieces.

Our review process:

Our Top Picks:

Best Overall:
Buy: Svbony 4 mm Telescope Eyepiece
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Best For Saturn:
Buy: Meoptex 4 mm Telescope Eyepiece
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Best For Star:
Buy: COLPARY 4 mm Telescope Eyepiece
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Best For Planetary Nebula:
Buy: Celticbird 4 mm Telescope Eyepiece
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Best For Moon:
Buy: Alstar 4 mm Telescope Eyepiece
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Best Overall: Svbony 4 mm Telescope Eyepiece

Svbony 4 mm Telescope Eyepiece
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The svbony 4 mm telescope eyepiece is long-lasting, rigid and fits well with your daily purpose like a dream. If you get a $200 telescope for Christmas and the biggest lens is a regular 20mm, this will make life much nicer when you are looking at things that are large but faint as in Lagoon nebula or Andromeda galaxy. It's a nice lightweight wide field eyepiece, which provides a little more magnification than a focal plane.

The three focal lengths included in this set cover a range that's suitable for most of these telescopes. These are metal barrels and plastic tops with a rubbery coating and very light weight. It is suitable for eyeglass wearers.

Why We Like This:
  • Comes with plastic caps for both ends
  • Surprisingly clear, sharp and wide view for a light and simple plastic eyepiece
  • Lot of satisfied buyers

Best For Saturn: Meoptex 4 mm Telescope Eyepiece

Meoptex 4 mm Telescope Eyepiece
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If you want nothing but a eyepiece that is reliable, this meoptex 4 mm telescope eyepiece is certainly a right investment. The "green lens" is very veryfaint. It is a great little eyepeice for eyepiece projection. It will fit any telescope with a 1-1/4 inch diameter focuser. The eye relief is also extremely narrow and it makes it difficult to view. Despite this, it is a well constructed eyepiece, and even with the dust and the slight scratch, it still provides a nice clear image.

The lens is very clear and is effective for spotting at 1/2 mile / 880 meters. It’s a perfect fit, and the focal length gives you an 83x magnification. The build quality is excellent and the optics have been fantastic.

Why We Like This:
  • Has a good field of view, and produces good images
  • Helps with the viewing and fits perfectly
  • Beautiful matte aluminum barrels 1.25” barrels are threaded to accept filters

Best For Star: COLPARY 4 mm Telescope Eyepiece

COLPARY 4 mm Telescope Eyepiece
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If you want nothing but the best reliable eyepiece, then colpary 4 mm telescope eyepiece is the one you should definitely consider, as it manages to bring a lot to the table. It is perfect for broad-field lunar observations, medium-sized star clusters, and a wide range of cloudy nebulas and deep-sky targets.

Why We Like This:
  • 4 -element plossl design, has a approx 52 degree afov
  • Fold-down rubber eyeguard threaded for standard
  • New and hot release

Best For Planetary Nebula: Celticbird 4 mm Telescope Eyepiece

Celticbird 4 mm Telescope Eyepiece
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The celticbird 4 mm telescope eyepiece might be a relatively new release, but it's still nothing short of impressive this year. The Celticbird plossl eyepiece is made of all metal construction, and fits for any telescope with a standard 1.25inch focuser, astronomy filters and barlow lens. It gives the widest viewing field along with extra sharpness and long eye relief. It is perfect for lunar craters for observation, planetary nebula, and more. It comes with beautiful matte aluminum barrels and blackened lens edges to prevent internal reflections and increase contrast.

The Foldable and detachable rubber eye patch can be adjusted according to different use needs. It is packaged in a sturdy plastic case to protect the eyepiece from dust and moisture, which makes storage more simple and convenient. It provides a relatively comfortable viewing distance under high magnification conditions.

Why We Like This:
  • New and hot release
  • Delivers what they promise

Best For Moon: Alstar 4 mm Telescope Eyepiece

Alstar 4 mm Telescope Eyepiece
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The alstar 4 mm telescope eyepiece should be able to handle its purpose and duties with ease. Many tests have demonstrated that the Alstar Optics Planetary eyepieces have an excellent optical performance well beyond common pl eyepieces. It could bring you a better observation experience in a comfortable situation with high-contrast imaging. It is perfectly suited for observing planets, deep sky objects as well as for projection photography with dslr or compact digital cameras. It has 5 lens elements in 3 groups.

It is made of high-quality aluminum, which is firm and durable. It is adjustable freely for optimum viewing comfort. The eyepieces are sourced directly from the factory as A-grade products. It is compatible with any telescope that accepts 1.25" eyepieces.

Why We Like This:
  • Aluminum barrel is threaded for filters and internally blackened to eliminate internal scattering
  • Experienced observers will truly appreciate such generous eye relief at significant magnifications
  • Obtain higher magnification with short focal length