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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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CA$153.99 - CA$153.99
CA$153.99
CA$153.99 - CA$153.99
CA$153.99

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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CA$153.99 - CA$153.99
CA$153.99
CA$153.99 - CA$153.99
CA$153.99
CA$489.99 - CA$489.99
CA$489.99
CA$489.99 - CA$489.99
CA$489.99

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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CA$489.99 - CA$489.99
CA$489.99
CA$489.99 - CA$489.99
CA$489.99
CA$419.99 - CA$419.99
CA$419.99
CA$419.99 - CA$419.99
CA$419.99

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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CA$419.99 - CA$419.99
CA$419.99
CA$419.99 - CA$419.99
CA$419.99
CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99

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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CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99
CA$419.99 - CA$419.99
CA$419.99
CA$419.99 - CA$419.99
CA$419.99

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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CA$419.99 - CA$419.99
CA$419.99
CA$419.99 - CA$419.99
CA$419.99
CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99

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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CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99

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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CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99
CA$699.99 - CA$699.99
CA$699.99
CA$699.99 - CA$699.99
CA$699.99

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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CA$699.99 - CA$699.99
CA$699.99
CA$699.99 - CA$699.99
CA$699.99
CA$1,259.99 - CA$1,259.99
CA$1,259.99
CA$1,259.99 - CA$1,259.99
CA$1,259.99

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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CA$1,259.99 - CA$1,259.99
CA$1,259.99
CA$1,259.99 - CA$1,259.99
CA$1,259.99
CA$139.99 - CA$139.99
CA$139.99
CA$139.99 - CA$139.99
CA$139.99

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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CA$139.99 - CA$139.99
CA$139.99
CA$139.99 - CA$139.99
CA$139.99
CA$349.99 - CA$349.99
CA$349.99
CA$349.99 - CA$349.99
CA$349.99

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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CA$349.99 - CA$349.99
CA$349.99
CA$349.99 - CA$349.99
CA$349.99
CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99

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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CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99
CA$97.99 - CA$97.99
CA$97.99
CA$97.99 - CA$97.99
CA$97.99

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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CA$97.99 - CA$97.99
CA$97.99
CA$97.99 - CA$97.99
CA$97.99
CA$97.99 - CA$97.99
CA$97.99
CA$97.99 - CA$97.99
CA$97.99

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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CA$97.99 - CA$97.99
CA$97.99
CA$97.99 - CA$97.99
CA$97.99
CA$153.99 - CA$153.99
CA$153.99
CA$153.99 - CA$153.99
CA$153.99

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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CA$153.99 - CA$153.99
CA$153.99
CA$153.99 - CA$153.99
CA$153.99
CA$153.99 - CA$153.99
CA$153.99
CA$153.99 - CA$153.99
CA$153.99

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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CA$153.99 - CA$153.99
CA$153.99
CA$153.99 - CA$153.99
CA$153.99
CA$237.99 - CA$237.99
CA$237.99
CA$237.99 - CA$237.99
CA$237.99

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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CA$237.99 - CA$237.99
CA$237.99
CA$237.99 - CA$237.99
CA$237.99
CA$111.99 - CA$111.99
CA$111.99
CA$111.99 - CA$111.99
CA$111.99

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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CA$111.99 - CA$111.99
CA$111.99
CA$111.99 - CA$111.99
CA$111.99
CA$97.99 - CA$97.99
CA$97.99
CA$97.99 - CA$97.99
CA$97.99

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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CA$97.99 - CA$97.99
CA$97.99
CA$97.99 - CA$97.99
CA$97.99
CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99

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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CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99

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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CA$209.99 - CA$209.99
CA$209.99
CA$209.99 - CA$209.99
CA$209.99
CA$97.99 - CA$97.99
CA$97.99
CA$97.99 - CA$97.99
CA$97.99

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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CA$97.99 - CA$97.99
CA$97.99
CA$97.99 - CA$97.99
CA$97.99
CA$97.99 - CA$97.99
CA$97.99
CA$97.99 - CA$97.99
CA$97.99

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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CA$97.99 - CA$97.99
CA$97.99
CA$97.99 - CA$97.99
CA$97.99
CA$265.99 - CA$265.99
CA$265.99
CA$265.99 - CA$265.99
CA$265.99

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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CA$265.99 - CA$265.99
CA$265.99
CA$265.99 - CA$265.99
CA$265.99