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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

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.

Filters

$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
$349.99 - $349.99
$349.99
$349.99 - $349.99
$349.99

Explore Scientific 100° 14mm Waterproof Eyepiece - 2"

ES-EPWP10014-01
8 in stock

14mm Focal Length 100° Apparent Field of View 2" Barrel Diameter Argon-Purged and Waterproof Construction Fully Multi-Coated and Edge-Blackened Op...

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$349.99 - $349.99
$349.99
$349.99 - $349.99
$349.99
$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° 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
$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99

Explore Scientific 100° 9mm Waterproof Eyepiece - 2"

ES-EPWP1009-01

9mm Focal Length 100° Apparent Field of View 2" Barrel Diameter Argon-Purged Waterproof Construction Fully Multi-Coated Optics Description FAQ ...

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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° 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
$499.99 - $499.99
$499.99
$499.99 - $499.99
$499.99

Explore Scientific 100° 20mm Waterproof Eyepiece - 2"

ES-EPWP10020-01
1 in stock

Expansive Apparent Field of View 2-inch Diameter Barrel Waterproof and Fog-Proof Construction Argon-Purged and Sealed Optical Housing Fully Multi-...

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$499.99 - $499.99
$499.99
$499.99 - $499.99
$499.99
$899.99 - $899.99
$899.99
$899.99 - $899.99
$899.99

Explore Scientific 100° 25mm Waterproof Eyepiece - 2"

ES-EPWP10025-01
1 in stock

100° Apparent Field of View 25mm Focal Length 2" Barrel Diameter Waterproof and Argon-Purged Construction Fully Multi-Coated and Edge-Blackened Op...

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$899.99 - $899.99
$899.99
$899.99 - $899.99
$899.99
$99.99 - $99.99
$99.99
$99.99 - $99.99
$99.99

Explore Scientific 52° 30mm Waterproof Eyepiece - 1.25"

ES-EPWP5230-01
11 in stock

30mm Focal Length 52° Apparent Field of View 1.25" Barrel Diameter Waterproof & Argon-Purged Construction Description FAQ Specifications In...

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$99.99 - $99.99
$99.99
$99.99 - $99.99
$99.99
$249.99 - $249.99
$249.99
$249.99 - $249.99
$249.99

Explore Scientific 82° 24mm Waterproof Eyepiece - 2"

ES-EPWP8224-01
2 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
$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
$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99

Explore Scientific 52° 10mm Waterproof Eyepiece - 1.25"

ES-EPWP5210-01
2 in stock

10mm Focal Length 52° Apparent Field of View 1.25" Barrel Diameter Waterproof, Argon-Purged Construction Flat-Field Multi-Element Optical Design ...

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$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99

Explore Scientific 52° 4.5mm Waterproof Eyepiece - 1.25"

ES-EPWP5245-01
1 in stock

High-magnification focal length for detailed views 52° apparent field of view Standard 1.25" barrel format Waterproof and argon-purged for all-wea...

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$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99
$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° 16mm Waterproof Eyepiece - 1.25"

ES-EPWP6816-01
2 in stock

16mm Focal Length 68° Apparent Field of View 1.25" Barrel Diameter Waterproof & Argon-Purged Parfocal with 68° Series Eyepieces Long Eye Relie...

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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
$79.99 - $79.99
$79.99
$79.99 - $79.99
$79.99

Explore Scientific 52° 25mm Waterproof Eyepiece - 1.25"

ES-EPWP5225-01
3 in stock

25mm Focal Length 52° Apparent Field of View 1.25" Barrel Diameter Waterproof & Argon-Purged Construction Weighs 6.4 oz (181.4 g) Descripti...

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$79.99 - $79.99
$79.99
$79.99 - $79.99
$79.99
$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99

Explore Scientific 52° 6.5mm Waterproof Eyepiece - 1.25"

ES-EPWP5265-01
6 in stock

6.5mm Focal Length 52° Apparent Field of View 1.25" Barrel Diameter Waterproof and Argon-Purged Construction Multi-Coated, Flat-Field Optics De...

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$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99
$149.99 - $149.99
$149.99
$149.99 - $149.99
$149.99

Explore Scientific 52° 40mm Waterproof Eyepiece - 2"

ES-EPWP5240-01
2 in stock

40mm Focal Length 52° Apparent Field of View 2" Diameter Barrel Waterproof and Argon-Purged Construction Fully Multi-Coated, Flat-Field Optics ...

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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° 4.5mm LER Waterproof Eyepiece - 1.25"

ES-EPWP8245LE-01

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
$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99

Explore Scientific 62° 9mm Waterproof Eyepiece - 1.25"

ES-EPWP6209LE-01
8 in stock

9mm Focal Length 62° Apparent Field of View 1.25" Barrel Diameter Waterproof & Argon-Purged Flat-Field Optical Design Description FAQ Speci...

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$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99

Explore Scientific 52° 15mm Waterproof Eyepiece - 1.25"

ES-EPWP5215-01
12 in stock

15mm Focal Length 52° Apparent Field of View 1.25" Barrel Diameter Waterproof, Argon-Purged Construction Flat-Field Multi-Element Optical Design ...

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$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99
$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...

View full details
$189.99 - $189.99
$189.99
$189.99 - $189.99
$189.99