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Levenhuk Ra 1.25" ER20 Wide Angle Eyepiece - 18mm # 35009

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Brand Levenhuk
Part Number 35009
Availability available

Product Info

Manufacturer Description

Levenhuk Ra ER20 WA 18 mm Eyepiece
Wide-angle eyepiece. Focal length: 18 mm. Field of view: 68°

WA in the Levenhuk Ra ER20 WA 18 mm Eyepiece model name stands for Wide-Angle, and the field of view of this model equals 68 degrees. This model will be especially useful for those who wear glasses, since it has a long eye relief of 0.8 inches and comes with a twist-up rubber eyecup. As with all other eyepieces in the Levenhuk Ra series, Levenhuk Ra ER20 WA 18 mm Eyepiece has a fully multi-coated optics and provides high-quality views. This eyepiece has a focal length of 0.7 inches and is lightweight due to an aluminum shell. Another good feature of this model is the possibility to attach it to almost every telescope with a focuser barrel diameter of 1.25'' or 2'' (using 1.25'' to 2'' adapter in the latter case).

Focal length, in: 0.7
Eyepiece diameter, in: 1.2
Exit pupil diameter, in: 0.8
Barrel diameter: 1.25"
Apparent field of view, °: 68
Optical design: 8 elements in 6 groups, fully multi-coated
Shell: aluminum


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Binocular Exit Pupil 20mm
Apparent Field of View 68°
Barrel Size 1.25" (31.7mm)
Bolt Case Included Yes - Free Agena Eyepiece Container
Bolt Case Size Agena 65x80mm
Coatings Fully Multi-Coated
Eye Relief by Design 20mm
Filter Threads Standard 1.25" Filter Thread (M28.5 x 0.6)
Focal Length 18mm
Lens Elements 8
Lens Groups 6
Rubber Eye Guard Yes (Twist Up)
Manufacturer Levenhuk
Eyepiece Focal Length 15.1mm - 20mm
Eyepiece Field of View 61 - 70 degrees
Eyepiece Series Levenhuk Ra ER20 WA
Barrel Type Tapered barrel
Eyepiece Weight 12.80oz (362.87g)