Levenhuk Ra R90 ED Doublet OTA





$1,045.56 / EA
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Apochromatic refractor. Objective lens diameter: 90 mm. Focal length: 500 mm Levenhuk Ra R90 ED Doublet OTA has a focal length of 19.7 inches and an objective lens diameter of 3.5 inches. The main features of Levenhuk Ra R90 ED Doublet OTA are a fully multi-coated two-element objective lens made of ED glass that provides for clear views with no aberrations, and a dual-speed Crayford focuser for precise focusing. Levenhuk Ra R90 ED Doublet OTA has a traditional design, and the telescope tube of this model is made of metal. Thanks to the retractable dew cap on the front end of the telescope tube, your instrument is well protected from humidity whenever you need it. Levenhuk Ra R90 ED Doublet OTA also has a barrel diameter of 1.25'' so you won't have any problems using it with different accessories. It comes with a sturdy aluminum case for storage and transportation. Specifications: Optical design: apochromatic refractor Objective lens: two-element Objective lens diameter (aperture), in: 3.5 Focal length, in: 19.7 Focal ratio: f/5.5 Optics material: ED glass Optics coating: fully multi-coated Barrel diameter: 1.25" Optical tube material: metal Focuser: 2'' dual-speed Crayford focuser Tube-mount assembly system: quick-release thumbscrew Optical tube length, in: 15.7 Optical tube diameter, in: 4.7 Optical tube weight, lbs: 7.5

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