MASUYAMA 2″ Eyepieces

$198.09 ~~$279~~ In stock

Category: Eyepieces

Japanese premium brand – MASUYAMA 2" Eyepieces

Description

Lens design : Masuyama Ortho Plossl (MOP)
5 elements in 3 groups
Fully multi-coated
Completely designed and produced by Ohi Kohki Co., Ltd. in Japan
Made in Japan

Specifications

Focal Length	Apparent FOV	Eye Relief	Field Stop	Physical Length	Outer Diameter	Weight
20mm	85-degree	12.5mm	29.4mm	90mm	58mm	304g
26mm	85-degree	16mm	38.5mm	98mm	59mm	380g
32mm	85-degree	20mm	47mm	120mm	58mm	450g
35mm	53-degree	23.5mm	/	104mm	53mm	300g
40mm	53-degree	28mm	/	115mm	53mm	320g
45mm	53-degree	32mm	40mm	128mm	71mm with rubber grip 60mm without grip	508g
50mm	53-degree	40mm	47mm	142mm	71mm with rubber grip 60mm without grip	570g
60mm	46-degree	46mm	47mm	148mm	71mm with rubber grip 60mm without grip	600g

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Eva T. ★★★★★ Oct 21, 2026

Swapping in the 2" Masuyama eyepiece was like turning up the resolution on my telescope—Jupiter's bands snapped into crisp detail. The fully multi-coated glass cuts glare so well that even faint nebula wisps stand out clearly. It's a noticeable upgrade from my old Plossls.

Thomas E. ★★★★★ Oct 20, 2026

The coating is so clean that even in my f/6 scope, stars snap into focus with almost no false color. I was worried about eye relief being tight, but it’s actually usable for my glasses—just barely. Four stars because the rubber eyecup rolls down a bit too easily for my liking.

Riley Q. ★★★★★ Oct 19, 2026

The five-element design delivers a noticeably cleaner image than my old Plossls, and the multi-coating really helps with contrast on Jupiter. Focus snaps right into place without any false color creeping in.