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Levenhuk

Levenhuk Ra 150C Cassegrain OTA Telescope

Levenhuk Ra 150C Cassegrain OTA Telescope

Regular price $509.00
Regular price Sale price $509.00
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🚚 Estimated delivery: 3 days

Levenhuk Ra 150C Cassegrain OTA is a reflector with Cassegrain design that is ideal for deep sky observing. It has an outstanding design. The primary mirror is paraboloid and the secondary mirror is hyperboloid. Thanks to this, the transmitted image does not have spherical distortion throughout the entire field of view, even at maximum magnification. This optical tube (OTA) will please experienced users with demanding needs.

The optical elements are made of quartz glass with a silicon dioxide aluminum coating. The optical system has a reflectivity index of 92~96%. The dual-speed Crayford focuser is slack-free, allowing for precise focus adjustments. The optical tube is made of steel. Its interior has high-quality blackening, and on the outside there are two supports: for the eyepiece holder and for installing the mount (dovetail plate). The Levenhuk Ra 150C Cassegrain optical tube is compatible with almost all modern frames.

Attention: The mount, tripod, finderscope and eyepieces are not included in the kit. Some recommendations are made under the description. If you have any questions, contact our customer service center.

Characteristics:

  • Reflector with paraboloid and hyperboloid mirrors
  • Silicon aluminum dioxide coating with a reflectivity index of 92~96%
  • Complete absence of spherical aberration
  • Good correction of astigmatism and field curvature
  • Dual-speed Crayford focuser, precise and fast sharpness adjustment
  • 8 internal knife-edge deflectors
  • Telescopic tube travel: 41 mm (laser engraved millimeter scale)
  • Back focus distance: 157.2mm (from end of 2" focuser ring)

The kit includes:

  • Telescope optical tube
  • Search engine base
  • Dovetail plate
  • 2" extension ring
  • 1" extension ring
  • Protective cover
  • User Manual and Lifetime Warranty

Specifications

prism material

quartz

Optics coating

silicon and aluminum dioxide

Main mirror diameter (aperture), mm

153

Secondary mirror diameter, mm

fifty

Lens shape (a mirror)

main: paraboloid; secondary: hyperboloid

Focal length, mm

1836

Maximum useful magnification, x

304

Focal ratio

f/12

Resolution threshold

0.76

Stellar limit magnitude

13.6

Eye tube diameter

1.25/2

Focus system

Double Speed ​​Crayford

Temperature range, °C

−5… +35

Optical tube mounting mode

dovetail plate

Optical tube material

steel

User Level

professionals, experienced users

Observed objects

deep space objects
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