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Vixen 1.25" SLV Lanthanum Eyepiece - 4mm # 37203

4.8 (4 Reviews) Read Reviews Write Review
Brand Vixen Optics
Part Number 37203
Availability available

Product Info

Manufacturer Description

Vixen’s SLV Series eyepieces feature fully multi-coated lenses in a full metal body. High quality lanthanum glass with a scratch resistant lens surface delivers an exceptionally clear, high contrast field of view. With comfortable long eye relief of 20mm, improved twist-up eye cup for adjusting the best eye-point, and high eye point design, you can use these eyepieces for many hours of observation without eye strain. The unique shape is easy to grip and the polygonal rubber grip provides anti-rolling protection.

Manufacturer part number: 37203

Reviews

4.8 (Based on 4 Reviews) 100% of reviewers recommended this product.
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    1. Guest

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      Review by Anthony H.
      1549220599
      Feb 3, 2019

      4.0 Vixen SLV 4mm

      Pros:

      Cons:

      Comments:

      The eyepiece has some very nice features. The twist-up eyecup is well designed and implemented. The smooth eyepiece barrel also makes it easy to insert and remove from focusers and adapters. The image quality is first-rate, but the AFOV is a little tight. Overall, an excellent eyepiece. Definitely recommended.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    2. Guest

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      Review by David R.
      1532951270
      Jul 30, 2018

      5.0 Very nice eyepiece

      Pros:

      Cons:

      Comments:

      The view through this eyepiece is very nice indeed. It has a narrow AFOV so the field isn't the widest. But it's looks really good.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    3. joe1950

      joe1950 New Member

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      Review by JOSEPH D.
      1532227548
      Jul 21, 2018

      5.0 Excellent. Sharp images and comfortable to use.

      Pros:

      Cons:

      Comments:

      The Vixen 4mm SLV eyepiece is excellent in terms of performance and comfort in use. Images are sharp and color free, light scatter is absent and the 50° field is plenty for lunar or planetary observation. Contrast is high and color fidelity very good. The eye relief is comfortable and eye position not super critical. It is as good or better than any short focal length eyepiece I've used.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    4. Guest

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      Review by Daniel P.
      1529247386
      Jun 17, 2018

      5.0 Checks all the boxes

      Pros:

      Cons:

      Comments:

      I added this 4mm SLV to my collection to maximize magnifications using f/5 scopes. Like other SLV's that I own, this eyepiece offers long eye relief and has excellent fit and finish. I have used it recently to view double stars with a 80mm f/5 refractor and 203mm f/6 dob. Images were bright and sharp. The SLV line is worth every penny, particularly now on sale. This eyepiece does not disappoint.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Specifications

      Apparent Field of View 50°
      Barrel Size 1.25" (31.7mm)
      Bolt Case Included Yes - Free Agena Eyepiece Container
      Bolt Case Size Agena 52x80mm
      Coatings Fully Multi-Coated
      End Caps 2
      Eye Relief by Design 20mm
      Filter Threads Standard 1.25" Filter Thread (M28.5 x 0.6)
      Focal Length 4mm
      Lens Elements 7
      Lens Groups 4
      Rubber Eye Guard Twist-up Eyecup
      Manufacturer Vixen Optics
      Eyepiece Focal Length 5mm and Under
      Eyepiece Field of View Up to 50 degrees
      Eyepiece Series Vixen SLV
      Barrel Type Smooth sided
      Eyepiece Weight 5.80oz (164.43g)