The Levenhuk Ra R66 ED Doublet Black OTA apochromatic refractor is a short-focus optical tube that allows for getting an idea of the objects from the Messier and NGC catalogues as well as observe the relief of the lunar surface in detail. You can carry out planetary observations as well as deep sky observations. However, the primary use of this Optical Tube Assembly (OTA) is astrophotography. The pictures taken by this telescope are high contrast and very clear detail.

The lenses are made of extra-low dispersion glass that effectively suppresses chromatic aberrations, especially secondary and spherochromatism. The wide field of view makes it comfortable to study extended areas of the sky. The telescope features a dual-speed Crayford focuser that provides smooth and highly accurate focusing under all conditions.

The optical tube is made of anodized aluminum and can be installed on most modern mounts. As the OTA is quite lightweight and compact, it is a great choice for countryside trips. The kit also includes a convenient aluminum case for transporting and storing the telescope.

Please note: Mount, tripod, and optical accessories are not included.


  • Compact and lightweight apochromatic refractor
  • Fully multi-coated glass lenses made of ED glass
  • Dual-speed Crayford focuser for precise focus adjustments
  • Excellent image clarity and contrast, minimal chromatism
  • Excellent choice for astrophotography, good for visual observations

The kit includes:

  • Telescope optical tube
  • Cleaning wipe
  • Aluminum case
  • Protective caps
  • User manual and lifetime warranty
Brand Levenhuk, Inc., USA
Warranty, years lifetime
Package size (LxWxH), cm 40.5x29.5x21
Shipping Weight, kg 4.37
Optical design refractor
Optical scheme apochromat
Optics material ED
Optics coating fully multi-coated
Objective lens diameter (aperture), mm 66.0
Focal length, mm 400
Highest practical power, x 132.0
Aperture ratio f/6
Resolution threshold, arcseconds 1.75
Focuser 1.25”, Crayford, dual-speed
Optical tube mounting mode quick-release 1/4” thumbscrew
Optical tube material anodized aluminum
User level beginners
Assembly and installation difficulty level easy
Observed object planets of the Solar System
Pouch in set True

Returns Policy

We have a 14-day return policy. If you are not satisfied with your purchase, please return it in its original packaging and be sure to put the original product packaging inside the shipping box to avoid any damage..

All items must be in their original condition and unused. The value of your purchase will be refunded. .

Shipping charges will not be refunded.

If the return is due to a defective product, you may be compensated for the return shipping.

Please contact us for more details if you need to make a return..


- From 0 to 2 kg - shipping cost: 12,50 euros.

- From 2.001 kg to 30 kg - shipping cost: 17,00 euros.

- From 30,001 kg - shipping cost: 30,00 euros.

In case of collection at our warehouse or resale points - the shipping is free.

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