High Point 10" f/4 Imaging Newtonian OTA
The High Point 10" f/4 Imaging Newtonian OTA is a versatile telescope, equipped with everything you need for wide-field imaging of deep space. The 38.5" long optical tube is made of rolled steel for added durability and has a large aperture of 10", perfect for capturing deep space views. This OTA also has a diameter of 11-7/8", weighing 29.25lb without the finder. To reduce reflections, the OTA interior has been painted black with a matte finish. The 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. You can easily attach a 35mm DSLR camera, webcam, or CCD/CMOS imaging camera and be confident in the mechanical build of the High Point 10" f/4 Newtonian.
The OTA includes a dual-speed 3.3" Crayford focuser, featuring linear bearings 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 1:10 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. The draw tube has 2" of travel and has a focusing scale marked on the top to help you come back to the same focus point again and again. There is less wear on the focuser draw-tube, less flexure, and more rigidity due to design differences that support the drive rail and draw-tube along the length of travel instead of at a few contact points. A 3.3" to 2" and 2" to 1.25" compression ring adapters are included as standard equipment.
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). If you will be attaching this optical tube assembly to heavy-duty mount, you may require the larger Losmandy-style dovetail, which is sold separately. Keep in mind that the High Point 10" f/4 OTA weighs just about 30 pounds, and will require a mount that can handle a pretty substantial payload. A good option would be the Celestron CGE Pro or CGX, the Losmandy G11, the Paramount, or the Meade LX850. The High Point 10" 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).
10" f/4 Imaging Newtonian OTA
Cooling Fan for Primary
3.3" 10:1 Linear Crayford Focuser
3.3" to 2" Adapter
2" to 1.25" Adapter
Vixen-Style Dovetail Plate
35mm 2" Extension Tube
8x50 Straight Thru Finder and Bracket
Dimensions & Specifications
Model Number: 10F4N
Telescope Series: GSO Imaging Newtonians
Telescope Optical Design: Newtonian Reflector
Telescope Aperture: 10"
Telescope Focal Ratio: f/4
Telescope Focal Length: 1016mm
Optical Coatings: Aluminum and quartz
Secondary Mirror Central Obstruction: N/A
Finder Included: Yes - 8 x 50 Finder Included
Focuser Style: Crayford/Crayford Style
Focuser Size: 3.3"
Focuser Speed: Dual Speed
Telescope Mount Type: No Mount - OTA Only
Telescope OTA Diameter: 11-7/8"
Telescope OTA Length: 38.5"
Telescope OTA Weight: 29.25lb
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Default manufacturer warranty.
Return & Exchange Policy
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