Levenhuk Ra 150C Cassegrain OTA

£599.94 inc Vat

Reflector with a paraboloid primary mirror and a hyperboloid secondary mirror. Aperture: 153mm. Focal length: 1836mm

  • Warranty: lifetime
  • Package size (LxWxH): 100×40×31.5 cm
Levenhuk Ra 150C Cassegrain OTA Astronomy



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    Levenhuk Ra 150C Cassegrain OTA is a Cassegrain reflector that is perfect for observing the deep sky. It features a distinguished design. The primary mirror is paraboloid and the secondary mirror is a hyperboloid. Due to this, the transmitted picture has no spherical distortion across the entire field of view up to the maximum magnification. This Optical Tube Assembly (OTA) will be appealing to demanding and experienced users.

    The optics are made of quartz glass with a silicon dioxide coating. The optical system has a reflectivity index of 92~96%. The dual-speed Crayford focuser has no backlash so that it enables precise focus adjustments. The optical tube is made of steel, inside there is a high-quality blackening, and on the outside, there are two mounts: for the holder and for mount installation (dovetail plate). Levenhuk Ra 150C Cassegrain OTA is compatible with almost all of the modern mounts.

    Please note: Mount, tripod, finder, and eyepieces are not included.


    • Reflector with paraboloid and hyperboloid mirrors
    • Silicon dioxide coating with a reflectivity index of 92~96%
    • Full absence of spherical aberration
    • Good correction of astigmatism and field curvature
    • Dual-speed Crayford focuser, precise and fast adjustment of sharpness
    • 8 internal knife-edge baffles
    • Drawtube travel: 41mm (laser-engraved millimetre scale)
    • Back focus distance: 157.2mm (from the end of 2” focuser collar)

    The kit includes:

    • Telescope optical tube
    • Finder scope base
    • Dovetail plate
    • 2” Extension ring
    • 1” Extension ring
    • Dust cover
    • User manual and lifetime warranty
    Optical design reflector
    Optics material quartz
    Optics coating silicon dioxide
    Primary mirror diameter (aperture), mm 153
    Secondary mirror diameter, mm 50
    Lens (mirror) shape primary: paraboloid; secondary: a hyperboloid
    Focal length, mm 1836
    Highest practical power, x 304
    Focal ratio f/12
    Resolution threshold, arcseconds 0.76
    Limiting stellar magnitude 13.6
    Eyepiece barrel diameter 1.25/2
    Focuser 2” dual-speed Crayford
    Operating temperature range, °C
    −5… +35
    Tube-mount assembly system dovetail plate
    Optical tube material steel
    User level expert
    Assembly and setup simple
    Observed objects deep-sky objects


    Contact us on 01392 343050, or email us at explore@exploreoutside.co.uk.
    Free Delivery 5-7 Days (orders over £75)
    In-stock orders will be delivered to you within 5-7 working days.

    Standard Delivery 3-4 Days (£4.95)
    In-stock orders will be delivered to you within 4-5 working days.

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    Working days are Monday to Friday excluding UK Bank Holidays.

    Bank Holidays are not normal working days and therefore should be excluded from processing times.

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    To return a product, you have to complete the procedure within 30 days of purchase.
    - All returned products must be in perfect saleable condition with tags and labels still attached
    - Returned products can't show any signs that they were tried on or worn other than for trying them out at home before deciding whether or not to keep them
    - All returns require the original packaging

    Check the Returns page in the Customer Service here



    Levenhuk Ra 150C Cassegrain OTA Astronomy