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Explore Scientific Eyepieces

Explore Scientific eyepieces are grouped by apparent field, from the compact 52° and 62° series through the 68°, 72° and 82° series to the hyper-wide 92°, 100° and 120° models. Nearly all are waterproof and argon-purged, in 1.25", 2" and 3" barrels.

Examples include the 82° 8.5mm LER for comfortable high power, the 62° 40mm for low-power sweeps and the 100° 20mm for immersive deep-sky views. Choose the field width that fits your telescope and observing style.

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$109.99 - $109.99
$109.99
$109.99 - $109.99
$109.99

Explore Scientific 68° 20mm Waterproof Eyepiece - 1.25"

ES-EPWP6820-01

20mm Focal Length 68° Apparent Field of View 1.25" Barrel Diameter Argon-Purged Waterproof Construction Parfocal with other ES 68° Eyepieces De...

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$109.99 - $109.99
$109.99
$109.99 - $109.99
$109.99
$109.99 - $109.99
$109.99
$109.99 - $109.99
$109.99

Explore Scientific 68° 24mm Waterproof Eyepiece - 1.25"

ES-EPWP6824-01

24mm Focal Length 68° Apparent Field of View 1.25" Barrel Diameter Argon-Purged Waterproof Construction Parfocal with 68° Series Eyepieces Desc...

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$109.99 - $109.99
$109.99
$109.99 - $109.99
$109.99
$169.99 - $169.99
$169.99
$169.99 - $169.99
$169.99

Explore Scientific 68° 28mm Waterproof Eyepiece - 2"

ES-EPWP6828-01
1 in stock

28mm Focal Length 68° Apparent Field of View 2" Barrel Diameter Argon-Purged Waterproof Construction Long Eye Relief with Foldable Eyecup Descr...

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$169.99 - $169.99
$169.99
$169.99 - $169.99
$169.99
$219.99 - $219.99
$219.99
$219.99 - $219.99
$219.99

Explore Scientific 68° 34mm Waterproof Eyepiece - 2"

ES-EPWP6834-01

34mm Focal Length 68° Apparent Field of View 2" Diameter Barrel Argon-Purged Waterproof Construction Parfocal with other 68° Series Eyepieces Long...

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$219.99 - $219.99
$219.99
$219.99 - $219.99
$219.99
$309.99 - $309.99
$309.99
$309.99 - $309.99
$309.99

Explore Scientific 68° 40mm Waterproof Eyepiece - 2"

ES-EPWP6840-01

40mm Focal Length 68° Apparent Field of View 2" Barrel Diameter Argon-Purged Waterproof Construction Long Eye Relief for Eyeglass Wearers Parfocal...

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$309.99 - $309.99
$309.99
$309.99 - $309.99
$309.99
Explore Scientific 72° ED 40mm Waterproof Eyepiece
$449.99 - $449.99
$449.99
$449.99 - $449.99
$449.99

Explore Scientific 72° ED 40mm Waterproof Eyepiece

ES-EPWP7240ED-01

40mm Focal Length 72° Apparent Field of View 2-Inch Barrel Diameter Extra-Low Dispersion (ED) Glass Waterproof and Gas-Purged Construction Desc...

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$449.99 - $449.99
$449.99
$449.99 - $449.99
$449.99
Explore Scientific 72° ED 8.5mm Waterproof Eyepiece
$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99

Explore Scientific 72° ED 8.5mm Waterproof Eyepiece

ES-EPWP7285ED-01

8.5mm Focal Length 72° Apparent Field of View Extra-Low Dispersion (ED) Glass 1.25" Barrel Diameter Waterproof and Gas-Purged Description FAQ S...

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$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99
Explore Scientific 72° ED Series 11.5mm Waterproof Eyepiece
$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99

Explore Scientific 72° ED Series 11.5mm Waterproof Eyepiece

ES-EPWP72115ED-01

11.5mm Focal Length 72° Apparent Field of View Extra-Low Dispersion (ED) Glass 1.25" Barrel Diameter Waterproof Construction Description FAQ Sp...

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$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99
Explore Scientific 72° ED Series 15mm Waterproof Eyepiece
$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99

Explore Scientific 72° ED Series 15mm Waterproof Eyepiece

ES-EPWP7215ED-01

15mm Focal Length 72° Apparent Field of View 1.25" Diameter Barrel Extra-Low Dispersion (ED) Glass Waterproof Construction Description FAQ Spec...

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$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99
Explore Scientific 72° ED Series 20mm Waterproof Eyepiece
$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99

Explore Scientific 72° ED Series 20mm Waterproof Eyepiece

ES-EPWP7220ED-01

20mm Focal Length 72° Apparent Field of View 1.25" Barrel Diameter Waterproof & Gas-Purged Construction Extra-Low Dispersion (ED) Glass Des...

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$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99
Explore Scientific 72° ED Series 25mm Waterproof Eyepiece
$349.99 - $349.99
$349.99
$349.99 - $349.99
$349.99

Explore Scientific 72° ED Series 25mm Waterproof Eyepiece

ES-EPWP7225ED-01

25mm Focal Length 72° Apparent Field of View 2-Inch Barrel Diameter Extra-Low Dispersion (ED) Glass Waterproof and Gas-Purged Construction Desc...

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$349.99 - $349.99
$349.99
$349.99 - $349.99
$349.99
Explore Scientific 72° ED Series 30mm Waterproof Eyepiece
$399.99 - $399.99
$399.99
$399.99 - $399.99
$399.99

Explore Scientific 72° ED Series 30mm Waterproof Eyepiece

ES-EPWP7230ED-01

30mm Focal Length 72° Apparent Field of View 2-inch Barrel Diameter Extra-Low Dispersion (ED) Glass Waterproof and Gas-Purged Construction Desc...

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$399.99 - $399.99
$399.99
$399.99 - $399.99
$399.99
Explore Scientific 72° ED Series 6.5mm Waterproof Eyepiece
$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99

Explore Scientific 72° ED Series 6.5mm Waterproof Eyepiece

ES-EPWP7265ED-01

6.5mm Focal Length for High Magnification 72° Apparent Field of View 1.25" Barrel Diameter Extra-Low Dispersion (ED) Glass Element Waterproof and ...

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$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99
$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99

Explore Scientific 82° 11mm Waterproof Eyepiece - 1.25"

ES-EPWP8211-01

11mm Focal Length 82° Apparent Field of View 1.25" Barrel Diameter Waterproof & Argon-Purged Construction Enhanced Multilayer Deposition (EMD)...

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$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99

Explore Scientific 82° 14mm Waterproof Eyepiece - 1.25"

ES-EPWP8214-01

14mm Focal Length 82° Apparent Field of View 1.25" Barrel Diameter Waterproof & Argon-Purged Design EMD (Enhanced Multilayer Deposition) Coati...

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$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
$189.99 - $189.99
$189.99
$189.99 - $189.99
$189.99

Explore Scientific 82° 18mm Waterproof Eyepiece - 2"

ES-EPWP8218-01

18mm Focal Length 82° Apparent Field of View 2" Diameter Barrel Waterproof and Argon-Purged Construction Enhanced Multilayer Deposition (EMD) Coat...

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$189.99 - $189.99
$189.99
$189.99 - $189.99
$189.99
$249.99 - $249.99
$249.99
$249.99 - $249.99
$249.99

Explore Scientific 82° 24mm Waterproof Eyepiece - 2"

ES-EPWP8224-01
1 in stock

24mm Focal Length 82° Apparent Field of View 2" Barrel Diameter Argon-Purged Waterproof Design Enhanced Multilayer Deposition (EMD) Coatings De...

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$249.99 - $249.99
$249.99
$249.99 - $249.99
$249.99
$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99

Explore Scientific 82° 30mm Waterproof Eyepiece - 2"

ES-EPWP8230-01
5 in stock

30mm Focal Length 82° Apparent Field of View 2" Barrel Diameter Waterproof and Argon-Purged Construction Enhanced Multilayer Deposition (EMD) Coat...

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$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99
$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99

Explore Scientific 82° 4.5mm LER Waterproof Eyepiece - 1.25"

ES-EPWP8245LE-01
2 in stock

82° Apparent Field of View 4.5mm High-Magnification Focal Length 15.9mm Long Eye Relief (LER) Argon-Purged Waterproof Construction 1.25" Barrel Di...

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$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99

Explore Scientific 82° 6.5mm LER Waterproof Eyepiece - 1.25"

ES-EPWP8265LE-01

6.5mm Focal Length 82° Apparent Field of View 16.8mm Long Eye Relief (LER) 1.25" Barrel Diameter Argon-Purged Waterproof Construction Descripti...

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$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99

Explore Scientific 82° 8.5mm LER Waterproof Eyepiece - 1.25"

ES-EPWP8285LE-01

8.5mm Focal Length for High Magnification 82° Apparent Field of View 15mm Long Eye Relief (LER) 1.25" Barrel Diameter Argon-Purged Waterproof Cons...

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$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99
$309.99 - $309.99
$309.99
$309.99 - $309.99
$309.99

Explore Scientific 92° 12mm Long Eye Relief Waterproof Eyepiece - 2"

ES-EPWP9212-01

12mm Focal Length 92° Apparent Field of View 2" Barrel Diameter Long Eye Relief for Viewing Comfort Argon-Purged Waterproof Construction Descri...

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$309.99 - $309.99
$309.99
$309.99 - $309.99
$309.99
$369.99 - $369.99
$369.99
$369.99 - $369.99
$369.99

Explore Scientific 92° 17mm Long Eye Relief Waterproof Eyepiece - 2"

ES-EPWP9217-01

17mm Focal Length 92° Apparent Field of View 2" Barrel Diameter Long Eye Relief Design Argon-Purged Waterproof Construction Description FAQ Spe...

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$369.99 - $369.99
$369.99
$369.99 - $369.99
$369.99
Explore Scientific 92° ED Series 14mm Waterproof Eyepiece
$449.99 - $449.99
$449.99
$449.99 - $449.99
$449.99

Explore Scientific 92° ED Series 14mm Waterproof Eyepiece

ES-EPWP9214ED-01

14mm Focal Length 92° Apparent Field of View 2-inch Barrel Diameter Extra-Low Dispersion (ED) Glass Element Waterproof, Gas-Purged Construction ...

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$449.99 - $449.99
$449.99
$449.99 - $449.99
$449.99