Levenhuk Ra LER 3 mm is a practical eyepiece with a short focal length of 3 mm (0.1 in) and a long eye relief for maximum comfort during observations. This model performs best during planetary observations and may be used with a telescope of any optical design. The optics of this eyepiece are fully multi-coated and produce sharp and clear views across the field of view.
LER (Long Eye Relief) eyepieces have a very long eye relief that provides for maximum comfort during observations, even if you are wearing glasses. With its 1.25'' barrel diameter, this eyepiece can still be used with a 2'' focuser with a special adapter. Therefore, this eyepiece can be used with a telescope of any brand and make. The apparent field of view is 55°. This model also has a twist-up rubber eyecup. The eyepiece shell is made of lightweight aluminum.
|Name||Levenhuk - 3mm Ra LER Eyepiece|
|Dimensions||5.9×2.6×3.0 in. (15.0×6.5×7.5 cm.)|
|Exit Pupil||20mm diameter|
|Eyepiece Barrel Size||1.25" diameter|
|Eyepiece 1 Field of View||55°|
|Eyepiece Focal Length||3mm|
|Optical Design||7 elements in 4 groups, fully multi-coated|