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Levenhuk - 90mm Ra R90 ED Doublet OTA Apochromatic Refractor Telescope


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Manufactured by: Levenhuk


Levenhuk Ra R90 ED Doublet OTA is a compact refractor that has an objective lens of 90-mm (3.5-in) diameter and a focal length of 500 mm (19.7 in). The apochromatic objective lens consists of two 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 retractable dew cap on the front end of the telescope tube protects the optics from humidity when needed most. The telescope tube of this model is made of metal, following a more traditional design.

This telescope tube is fitted with a dual-speed Crayford focuser that guarantees high precision focusing with no backlash. The 1.25'' barrel diameter of the focuser allows you to use a number of accessories with this telescope. Levenhuk Ra R90 ED Doublet OTA also comes with an aluminum case for you to store and transport your telescope.

Additional Information

Name Levenhuk - 90mm Ra R90 ED Doublet OTA Apochromatic Refractor Telescope
Manufacturer Levenhuk
Model 44741
Dimensions 22.8×14.6×8.7 in. (58.0×37.0×22.0 cm.)
Focal Length 500mm
Focal Ratio f/5.5
Focuser 2'' dual-speed Crayford focuser
Objective lenses two-element
Objective Lense Sizes 90mm
Optical Coatings fully multi-coated
Optical Design apochromatic refractor, ED glass
Optical Tube metal
Optical Tube Length 400mm
Optical Tube Weight 7.5