Ultra-premium Masuyama eyepieces were offered briefly in the mid-1980s before going out of production a few years later. Since then, these legendary eyepieces have only been available - fleetingly - on the resale market. Now, after nearly 30 years, Masuyama eyepieces are back in production and updated with modern glass and multi-coating technology.
Coveted for their clean, high-contrast views on velvet-black backgrounds, Masuyama eyepieces incorporate a five-element "hybrid Plossl" design. They have much better performance towards the edge of the field and improved color performance compared to Plossls and other competing designs. Masuyama eyepieces achieve high contrast through a much smoother polish than nearly all premium eyepieces and through superior internal baffling in their long bodies.
The eyepieces are the signature design of the renowned optician Dr. Masuyama who designed many of the finest Japanese eyepieces of the 1960s and 1970s. Dr. Masuyama even designed the 100 mm focal-length eyepiece used for visual observing at the historic 60" telescope at Mount Wilson Observatory in California.
This 32mm focal-length Masuyama eyepiece with 2" barrel makes an ideal match for long focal ratio telescopes. With an 85-degree apparent field of view, this eyepiece offers superb contrast for observing the Moon, planets, double stars, and deep-sky objects. When their rubber grips are removed, a pair of these Masuyama eyepieces can also fit in many 2" binoviewers.
- Legendary Masuyama eyepiece with 32mm focal length and 2" barrel
- Incorporates latest glass and multi-coating technology
- Provides ultra-high-contrast views of the Moon, planets, and deep-sky objects
- Ideal for long focal ratio telescopes
- 120 mm long and weighs 450g (15.8 oz)
Wndwlkr New Member
- Skill Level
- Time with Product
Jun 19, 2017
- User Notes:
- Review by Frank K.
Deep sky scannerPros: Cons: Comments:
Was actually looking to get another EP when deciding on this one instead, am very glad I did. I've had it for 7 months now and have used it extensively to scan the sky and find faint objects. When compared to 2 other EP's of similar FL, my Masuyama is slightly crisper with more details of nebulae and stars revealed. It is also lightweight for it's FL & FOV and works well with my barlow.
This review was provided courtesy of AgenaAstro.comMay 20, 2017
Better than I thought it would be!Pros: Cons: Comments:
Just got in from a session with my f/9 refractor. Really enjoyed using this eyepiece. A pleasant surprise - I was expecting 1980's Erfle-like field curvature, but at f/9 the majority of the FOV is sharp with only slight breakdown in the outer portion. I was impressed by how well the view held up over the massive FOV for a 5-element eyepiece. The eyepiece has no rectilinear distortion and is excellent for panning around and using as a finder eyepiece.
The weight is much less than other 2-inch widefields, therefore no balance problems with my alt-az mount. I like the quality of glass and coatings in this and my 50mm Masuyama. Very high build quality on these. No accursed "safety" groove either!
This review was provided courtesy of AgenaAstro.comFeb 18, 2017
32mm Masuyama 2" EyepiecePros: Cons: Comments:
I used this eyepiece last night in my 10 inch f5 Dob and obtained terrific views of the ETA carina nebula and the large Magellanic cloud around the Tarantula nebula. The eyepiece has terrific clarity that really made the nebula stand out in almost a 3d feeling to the view. I had bought this eyepiece for a longer focal ratio f7.5 refractor but I found it provides very pleasing views of large objects in my faster Dob and will be my preferred low power eyepiece for this scope. There may be (as some have reported) some minor issues close to the edges at fast focal ratios that I did not see as I think my eyes really only focused on the central 70 or 80% field while just being aware of the rest.
This review was provided courtesy of AgenaAstro.comDec 30, 2016
Great Alternative to Other 85*+ OcularsPros: Cons: Comments:
I used this eyepiece in my fastest focal ratio telescope, an f/8 refractor. I evaluated the image for aberrations using large deep sky objects as my targets (e.g. M 45, NGC 457 and NGC 869 & 884). I was impressed with the large AFoV and the contrast between the sky and the stars of these objects. The only aberration seen was a small amount of field curvature in the outer FoV, but in over greater than 90 percent of the image the stars were sharp. Bear in mind FC can be introduced from the design of one's telescope when coupled with the design/mating of any particular ocular's lenses. This was the only reason for giving less than a 5 star rating. The Masuyama holds its own well against other 80+ degree UWA eyepieces that can cost nearly twice the price.
This review was provided courtesy of AgenaAstro.comDec 24, 2016
Lighter alternative to the big boys.Pros: Cons: Comments:
Not perfect at the very edge in my 8" sct. But a comfortable eyepiece to use with its eye relief. Wanted something lighter than a Nagler or ES82 in this focal length. Does a nice job.
This review was provided courtesy of AgenaAstro.comSort by
Apparent Field of View 85° Barrel Size 2" (50.8mm) Bolt Case Included Yes - Free Agena Eyepiece Container Bolt Case Size Agena 65x120mm Height (with Eye Guard) 120mm Max Width 58mm End Caps 2 Eye Relief by Design 20mm Filter Threads Standard 2" Filter Thread (M48 x 0.75) Focal Length 32mm Lens Elements 5 Lens Groups 3 Eyepiece Weight 15.80oz (447.92g) Manufacturer Masuyama Eyepiece Focal Length 30.1mm - 40mm Eyepiece Field of View Over 80 degrees Eyepiece Series Masuyama Barrel Type Smooth sided