Agena 1.25" ED Eyepiece - 12.5mm
Brand | Agena AstroProducts |
Part Number | - |
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Product Info
Manufacturer Description
ED stands for "Extra-Low Dispersion". These eyepieces use optical glass in which two of the lens elements are crafted from ED glass which is a special grade of glass that provides much superior refractive properties as compared to standard optical glass. This results in much better color correction. ED glass is often the type used in many expensive camera lenses and high-end refractor telescopes costing thousands of dollars.
Our ED-series eyepieces are available in a 1.25" barrel in 10 focal lengths (2.3, 3.8, 5.2, 7.5, 9.5, 12.5, 14, 18, 21 and 25mm). They feature a six-element lens design that provides significantly reduced chromatic aberration, high resolution and excellent sharpness without compromising image brightness. Their long 20mm eye relief means that even eyeglass wearers can take in the full 55-degree apparent wide field of view (AFOV).
All ED-series eyepieces are fully broadband multi-coated for maximum image brightness. Lens edges are blackened throughout for improved contrast. The eyepiece housing is precision machined from aluminum and clear-anodized to a lustrous finish. A rubber traction ring ensures a secure grip and a rubber eyeguard helps position your eye to block out stray light. The chrome barrel features a setscrew recess for added security. All eyepieces are parfocal and are threaded to accept standard 1.25" filters. Each eyepiece comes in a bolt case with two plastic end caps. Compare these with the ED eyepieces sold in very similar focal lengths by two of the "Big-3" telescope companies and you'll realize the savings we offer.
Reviews
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Sep 21, 2012
Love This Eyepiece!
Pros:Lightweight,Compact,Quality Lenses,Accurate
Cons: Comments:I use this eyepiece as part of a set for my telescope. It works as expected, even in humid summer conditions.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Jan 30, 2010Agena 12.5 ED
Pros:Quality Lenses,Strong Construction
Cons:None
Comments:I have used this in a 12", f/4.9 dob and my f/10 C8 and I am very satisfied. The sharpness edge to edge in the C8 and only very slightly blurred in the f/4.9 (last 5%). No false color, 20mm ER is perfect for eyeglass wearers far superior to plossls at this focal length. Coatings are very good, no ghosting or flares at all. Excellent for planetary use and I love it for M42
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
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Specifications
Apparent Field of View | 55° |
Barrel Size | 1.25" (31.7mm) |
Bolt Case Included | Yes - Manufacturer Supplied |
Bolt Case Size | - |
Coatings | Fully Broadband Multi-Coated |
Height (with Eye Guard) | 1.1" (27.8mm) |
End Caps | 2 |
Eye Relief by Design | 20mm |
Filter Threads | Standard 1.25" Filter Thread (M28.5 x 0.6) |
Focal Length | 12.50mm |
Lens Elements | 6 |
Rubber Eye Guard | Yes |
Blackened Lens Edges | Yes |
Manufacturer | Agena AstroProducts |
Eyepiece Focal Length | 10.1mm - 15mm |
Eyepiece Field of View | 51 - 60 degrees |
Barrel Type | With safety undercut |
Eyepiece Weight | 6oz (170.10g) |