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

Explore Scientific 100° 14mm Waterproof Eyepiece - 2"

ES-EPWP10014-01
7 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
$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
$1,259.99 - $1,259.99
$1,259.99
$1,259.99 - $1,259.99
$1,259.99

Explore Scientific 100° 30mm Waterproof Eyepiece - 3"

ES-EPWP10030-01

30mm Focal Length 100° Apparent Field of View 3" Diameter Barrel Argon-Purged Waterproof Construction Fully Multi-Coated and Edge-Blackened Optics...

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$1,259.99 - $1,259.99
$1,259.99
$1,259.99 - $1,259.99
$1,259.99
$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99

Explore Scientific 100° 5.5mm Waterproof Eyepiece - 2"

ES-EPWP10055-01
1 in stock

5.5mm Focal Length for High-Magnification Views 100° Apparent Field of View for an Immersive Spacewalk Experience 2" Barrel Format Argon-Purged an...

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$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99
$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
$899.99 - $899.99
$899.99
$899.99 - $899.99
$899.99

Explore Scientific 120° 9mm Waterproof Eyepiece -2"

ES-EPWP12009-01

9mm Focal Length 120° Apparent Field of View 2-Inch Diameter Barrel Argon-Purged Waterproof Construction Ideal for Non-Driven Telescopes Descri...

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$899.99 - $899.99
$899.99
$899.99 - $899.99
$899.99
$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° 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
$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99

Explore Scientific 52° 20mm Waterproof Eyepiece - 1.25"

ES-EPWP5220-01
8 in stock

20mm Focal Length 52° Apparent Field of View 1.25" Barrel Diameter Waterproof & Argon-Purged Construction Flat-Field Multi-Element Optical Des...

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

Explore Scientific 52° 3mm Waterproof Eyepiece - 1.25"

ES-EPWP5203-01
5 in stock

3mm Focal Length for High-Power Observing 52° Apparent Field of View 1.25" Barrel Diameter Fully Waterproof and Argon-Purged Enhanced Multi-Layer ...

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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

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

Explore Scientific 62° 14mm Waterproof Eyepiece - 1.25"

ES-EPWP6214LE-01
4 in stock

14mm Focal Length 62° Apparent Field of View 1.25" Barrel Diameter Waterproof & Argon-Purged Construction Flat-Field Multi-Element Design D...

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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 62° 20mm Waterproof Eyepiece - 1.25"

ES-EPWP6220LE-01
4 in stock

1.25" Barrel Format Waterproof & Argon-Purged Flat-Field Optical Design Multi-Coated Optics Near-Parfocal with 62° Series Description FAQ S...

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

Explore Scientific 62° 26mm Waterproof Eyepiece - 1.25"

ES-EPWP6226LE-01
4 in stock

26mm Focal Length 62° Apparent Field of View 1.25" Barrel Diameter Waterproof, Argon-Purged Construction Flat-Field Multi-Element Optical Design ...

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$79.99 - $79.99
$79.99
$79.99 - $79.99
$79.99
$119.99 - $119.99
$119.99
$119.99 - $119.99
$119.99

Explore Scientific 62° 32mm Waterproof Eyepiece -2"

ES-EPWP6232LE-01
4 in stock

32mm Focal Length 62° Apparent Field of View 2" Barrel Diameter Waterproof & Argon-Purged Construction Flat-Field Multi-Element Optics Near Pa...

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$119.99 - $119.99
$119.99
$119.99 - $119.99
$119.99
$259.99 - $259.99
$259.99
$259.99 - $259.99
$259.99

Explore Scientific 62° 40mm Waterproof Eyepiece - 2"

ES-EPWP6240LE-01
3 in stock

40mm Focal Length 62° Apparent Field of View 2" Diameter Barrel Waterproof & Argon-Purged Construction Flat-Field Multi-Element Optics Desc...

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$259.99 - $259.99
$259.99
$259.99 - $259.99
$259.99
$69.99 - $69.99
$69.99
$69.99 - $69.99
$69.99

Explore Scientific 62° 5.5mm Waterproof Eyepiece - 1.25"

ES-EPWP6255LE-01
7 in stock

5.5mm Focal Length 62° Apparent Field of View 1.25" Diameter Barrel Waterproof & Argon-Purged Flat-Field Multi-Element Design Description F...

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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 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
$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