The 2-group 4- element Plossl series eyepieces offer flat and clear images with good color correction. The NPL20, NPL25, NPL30 and NPL40 eyepieces feature a twist-up eye cup.
Aug 25, 2016
Quality Lenses,Easy to UseCons: Comments:
Nice bright eyepiece. I like the eyecup design.
Sharp field stop. Eye relief is better than my other 8mm plossl. Not uncomfortable at all. Sharp to the edge at f/10.
This review was provided courtesy of AgenaAstro.comMay 25, 2014
Good, but short eye reliefPros:
Compact,Lightweight,Quality Lenses,Strong Construction,AccurateCons:
Difficult to Use,Short eye reliefComments:
I had high expectations for this eyepiece. The optics are great quality. But, I didn't care for this type of eye cup and the short eye relief. By short, I'm talking 4.5mm or about 60% of the focal length. Both the 8mm and 10mm versions tended to fog up in cold (below 50 degrees F) and humid (above 80% humidity) weather. Maybe they work ok in warmer drier climates, but they just didn't work for me.
This review was provided courtesy of AgenaAstro.comSort by
|Apparent Field of View||50°|
|Barrel Size||1.25" (31.7mm)|
|Bolt Case Included||Yes - Free Agena Eyepiece Container|
|Bolt Case Size||Agena 42x60mm|
|Eye Relief by Design||4.5mm|
|Eyepiece Focal Length||5.1mm - 10mm|
|Eyepiece Field of View||Up to 50 degrees|
|Eyepiece Series||Vixen NPL|
|Barrel Type||With safety undercut|
|Filter Threads||Standard 1.25" Filter Thread (M28.5 x 0.6)|
|Eyepiece Weight||2.47oz (70.02g)|