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Orion 190mm f/5.3 Maksutov Newtonian Reflecting OTA Telescope

SKU : OR-09978

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  • High-Performance Astrophotography OTA
  • Large 190 mm (7.5-Inch) Maksutov-Newtonian Reflector
  • Optics Deliver Optically Flat Image
  • Fast f/5.3 Focal Ratio
  • 2-Inch Dual-Speed (11:1) Crayford Focuser
  • Larger 64 mm Secondary Mirror 
  • Slippage-free Primary Mirror and Meniscus Lens Supports


Product Details

  • Orion's 190 Mak-Newt Astrograph: 

    As one of Orion's satisfied customers put it, the Orion 190 mm Maksutov-Newtonian Astrograph Telescope gives "BIG APO Refractor-like performance at 1/3 the cost", not to mention the savings over smaller premium astrographs. This "Mak-Newt" Astrograph is an ideal instrument for astrophotographic pursuits, but it can also be used for stunning visual observations on those nights when you'd rather stargaze instead of capturing images. 

    The Premium 190 mm "Mak-Newt" Astrograph delivers crisply detailed and colorful images of deep-sky phenomena with its flat-field, coma-suppressed optics. The telescope's all-machined dual-speed 2-inch Crayford-style focuser with 11:1 fine focus control provides smooth motion and secure support for DSLR cameras, dedicated astrophotography cameras, and heavy visual accessories. The focuser includes 2-inch and 1.25-inch compression ring adapters for scratch-free insertion of eyepieces and other accessories. A T-thread adapter is included for direct attachment of a camera body (may require appropriate T-ring, sold separately). Two included tube rings and a narrow "Vixen-style" dovetail mounting bar are included for easy attachment of the 22-pound telescope tube to appropriate mounts and tripods.

    The 190 mm Maksutov-Newtonian Astrograph optics provide tremendous resolution with its optically fast f/5.3 design. The impressive 7.5-inch aperture ensures plenty of light-gathering ability to capture superb images of even the faintest of deep-sky gems. Attach a camera, such as a DSLR or Orion StarShoot astrophotography camera, and you'll be ready to start producing top-notch astrophotos in no time!

    The telescope's primary mirror is made of high-grade, low-expansion optical glass with enhanced reflectivity coatings for maximum performance. The primary mirror and the fully multi-coated BaK-7 meniscus lens combine to render truly spectacular images, with pinpoint stars across the entire field of view. The primary mirror and meniscus lens are securely held in place by three radially positioned nylon-tip set screws, which prevent any possibility of slippage or shifting. The 37.5-inch-long metal tube contains five knife-edge internal baffles for exceptional contrast.

    The secondary mirror diameter of 64 mm provides a very large illuminated field to take full advantage of larger CCD chips, found in DSLR cameras and many popular astrophotography cameras. The 100-percent fully illuminated field diameter of over 22 mm produces brighter images with less vignetting compared to other telescope designs.

    Our Premium Mak-Newt Astrograph performs just as admirably visually. The included focuser extension adapter allows visual astronomers to enjoy the sharp, high-contrast views that only a well-made instrument can deliver.

    So go ahead, push the envelope of your own imaging capabilities - affordably - with the Orion Premium 190 mm Mak-Newt Astrograph Telescope.


    Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. 


    Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.


    -Image with camera, mount, and tripod is for sample use purposes only; items sold separately.



  • specifications

    Aperture190 mm (7.5")
    Camera/Eyepiece ConnectionM42 T mount
    Dawes Limit0.61 arcseconds
    Focal Length1000 mm
    Focal Ratiof/5.3
    Glass TypeSchott BaK 7
    Highest Magnification380x
    Light Gathering Power737x
    Limiting Magnitude15.1
    Optical DesignMaksutov Newtonian
    Optical DesignNewtonian
    Secondary Obstruction64mm
    Tube Diameter190mm
    Tube Length952.5mm
    Tube Weight20 lbs
    Warranty1 Year Warranty
  • included items

    • Orion Premium 190 mm f/5.3 Maksutov-Newtonian Astrograph Optical Tube Assembly
    • Narrow Vixen-style Dovetail Mounting Bar
    • Two Tube Rings
    • 2-Inch to 1.25-Inch Telescope Eyepiece Adapter
    • Focuser Extension (for visual use)
    • Starry Night SE Astronomy Software (digital download insert)



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