High Point 8" f/4 Imaging Newtonian OTA - 8F4N

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Item #HIGH-8F4N

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  • 8" f/4 Imaging Newtonian OTA
  • Optical tube assembly has a center-spotted parabolic primary mirror
  • Equipped with diffraction-limited optics
  • Includes dual-speed 2" Crayford focuser
  • Low-vibration cooling fan is mounted on the primary mirror cell
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  • Description

    High Point 8" f/4 Imaging Newtonian OTA

    The High Point 8" f/4 Imaging Newtonian OTA is a versatile telescope, equipped with everything you need for wide-field imaging. The 32" long optical tube is made of rolled steel for added durability and has a diameter of 9". The 8" f/4 Newtonian optical tube assembly has a center-spotted parabolic primary mirror. The four secondary mirror vanes are as thin as possible while maintaining stability. Equipped with diffraction-limited optics, the parabolic primary mirror is housed in an aluminum cell fitted with six "push/pull" collimation knobs so that you can collimate without tools.

    The dual-speed 2" Crayford focuser includes linear bearings and a monorail that create a sturdy draw tube and reduce drag under heavy loads. Achieve focus with the larger of the two knobs, and then tweak your focus with the small 10:1 micro-focusing knob. The two other knobs on the focuser are a tension knob, allowing adjustments for the drag on the draw tube to match the weight of the load, and a focuser lock. A 35mm extension tube and a 2" to 1.25" compression ring adapter are included to add to the OTA's viewing capabilities.

    The 8" Newtonian can be attached to a wide variety of equatorial mounts. A pair of felt-lined split tube rings is included with the OTA. These rings can be attached by using either the Vixen-sized dovetail that is included or add your own Losmandy-style dovetail plate to the rings (sold separately). The High Point 8" Newtonian OTA also has a dovetailed finder adapter attached and accepts the included 50mm finderscope bracket. An 8x50 straight-through optical finderscope slides easily into this bracket.

    Sometimes it seems to take forever for your telescope to cool to ambient temperature. The High Point 8" f/4 Imaging Newtonian has a built-in cooling fan will help get your imaging faster. This low-vibration fan is mounted on the primary mirror cell and is powered by a battery pack that holds eight (8) AA batteries (batteries not included).

    Supplier SKU

    8F4N

    What's Included

    • 8" f/4 Imaging Newtonian OTA

    • Cooling Fan for Primary

    • 2" 10:1 Linear Crayford Focuser

    • 2" to 1.25" Adapter

    • Cradle Rings

    • Vixen-Style Dovetail Plate

    • 35mm 2" Extension Tube

    • 8x50 Straight Thru Finder and Bracket

    • Dust Cover

  • Dimensions & Specifications

    • Model Number : 8F4N
    • Telescope Series: GSO Imaging Newtonians
    • Telescope Optical Design: Newtonian Reflector
    • Telescope Aperture: 8"
    • Telescope Focal Ratio: f/4
    • Telescope Focal Length: 800mm
    • Optical Coatings: Aluminum and Quartz
    • Finder Included: Yes - 8 x 50 Finder Included
    • Focuser Style: Crayford/Crayford Style
    • Focuser Size: 2"
    • Focuser Speed: Dual Speed
    • Telescope OTA Diameter: 9"
    • Telescope OTA Length: 32"
    • Telescope OTA Weight: 18lb
    • Telescope OTA Weight with Accessories: 21.6lb


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    Manufacturer Warranty

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