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10000045: Levenhuk Ra R102 ED Triplet OTA
Levenhuk Ra R102 ED Triplet OTA is a refractor with a 102-mm (4-in) objective lens and focal ratio of f/7, best suited for visual observations of celestial objects. The telescope tube is fitted with a modern dual-speed Crayford focuser with the 3'' large diameter thread that provides for precision focusing and eliminates backlash.
The apochromatic objective lens consists of three lenses that reduce chromatic aberration to a barely noticeable minimum. The fully multi-coated lenses are made of ED glass and yield crisp and clear views of the night sky. The telescope tube of this model is made of metal, following a more traditional design.
three-element, FPL 53 glass
Objective lens diameter (aperture), mm
Focal length, mm
Resolution threshold, arcseconds
Eyepiece barrel diameter
3' dual-speed Crayford
Tube-mount assembly system
Optical tube material
Optical tube dimensions, mm
127x610/762 (dew cap retracted/extended)
5x24/30 (dew cap retracted/extended)
Optical tube weight, kg