BRESSER 8" f/3.9 Reflector Telescope with Exos-2 GoTo Motorized Mount and Tripod

BRESSER 8" f/3.9 Reflector Telescope with Exos-2 GoTo Motorized Mount and Tripod

BRESSER 8" f/3.9 Reflector Telescope with Exos-2 GoTo Motorized Mount and Tripod

B&H # BRN20839EXOS MFR # BR-N20839EXOS2GT
BRESSER 8" f/3.9 Reflector Telescope with Exos-2 GoTo Motorized Mount and Tripod

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Product Highlights

  • 8" Aperture Newtonian Reflector
  • 812mm Focal Length, f/3.9 Focal Ratio
  • 2" Crayford Focuser
  • 1.25" Eyepiece/Accessory Adapter
  • Exos-2 GoTo Motorized Equatorial Mount
  • 100,000-Object StarTracker GoTo Computer
  • Dual Axis DC Servo Motors with Encoders
  • Illuminated Polar Finder Scope
  • Adjustable Tripod, 2" Leg-Diameter
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  • 1Description

Designed for enhanced astrophotography and imaging performance, the Bresser 8" f/3.9 Reflector Telescope has a shortened focal length versus conventional scopes with a similar aperture to produce a fast f/3.9 focal ratio - translating to shorter exposure times. The scope is offered here with the computer-controlled motorized Exos-2 GoTo mount that features a 100,000+ database guidance system, dual-axis motors, a sturdy tripod, and an illuminated pole finder scope. Its large 8" primary mirror allows planets and the Moon to appear bright and clear while having the capacity to see out of the solar system to observe and image nebulae, galaxies, and binary stars.

This version of the scope comes equipped with the Exos-2 GoTo motorized equatorial mount and helps take the guess-work out of astronomy and gets you observing faster by combining an EQ mount with a 100,000+ database computer guidance system and dual-axis motors. To make set-up and alignment faster and easier, Bresser includes an illuminated polar finder scope for use in the Northern Hemisphere. The included tripod is built with large 2" diameter stainless steel legs and tight tolerances to reduce vibration for clearer viewing. A center stabilizer bar pulls the accessory tray up to lock the legs in place adding further rigidity and vibration reduction. It is adjustable from 29 to 49" to accommodate a wide range of users. The mounting cradle-ring assembly clamps over the optical tube and lets the user adjust the orientation and position of the scope relative to the mount to optimize viewing comfort and balancing, while avoiding interference with other equipment.

The SkyTracker kit includes the hand controller unit, and right ascension and declination motors. Its hand controller has more than 100,000 objects with the ability for users to input custom coordinates and favorites. With a slew speed of 2°/second and nine tracking speeds the SkyTracker can accurately keep near and deep sky objects such as the Moon, planets, galaxies and nebulae centered in your eyepiece for long exposure imaging and astrophotography or prolonged observation sessions.

The scope is equipped with a 2" focuser for over-sized eyepieces and accessories, and comes with a 1.25" reducer adapter to use smaller and more popular eyepieces. The focuser is a Crayford-style, instead of the more common rack-and-pinion, which uses a steel rod held tightly against the drawtube to provide a toothless friction system that eliminates backlash and enables ultra-fine precision focusing with its 10:1 reduction micro-focusing knob.

Optical Performance
  • Aperture: 8"
  • Focal ratio: f/3.9
  • Focal length: 812mm
  • Reflector-style optical design
  • 0.6 arc second resolution
StarTracker Go-To System
  • Dual-axis DC servo motors with digital encoders
  • Database includes over 100,000 astronomical objects
  • Add user-defined objects and favorites
  • Controls dual axis motors for precision tracking
  • ST-4 autoguiding port
  • Slewing speed: 2° per second
  • Nine tracking rates for near and deep-sky objects
  • 2.5x1.4" (6.3x3.6cm) LCD screen, eight-rows with 21 digits per row
Mount
  • Cast aluminum with white powder-coat
  • Ball bearings on both axes reduce vibrations and minimize backlash
  • Integrated bubble level on mount base
  • 9.9lb (4.5kg) counterweight with 20mm diameter bar
  • Latitude, Right Ascension, and Declination scales
  • Right ascension axis release lever allows for fast adjustment
  • Illuminated polar finder scope to increase alignment precision
Focuser
  • Dual-speed Crayford-style
  • 2" diameter drawtube
  • Coarse-focus knob, 10:1 fine-focus knob
  • Crayford focusers use a toothless friction system that allows for super-fine precision focusing without backlash
  • 1.25" adapter to use smaller eyepieces and accessories
Tripod
  • Three-section adjustable-height
  • 29lb payload capacity
  • 2.0" stainless steel legs
  • 29 to 49" height range
  • Center stabilizer bar locks legs in place to reduce vibrations
  • Accessory tray with holes for 1.25" eyepieces
  • Spiked feet for use in ground and grass for increased stability, especially on rough or uneven areas
In the Box
BRESSER 8" f/3.9 Reflector Telescope with Exos-2 GoTo Motorized Mount and Tripod
  • Exos-2GT Computerized German Equatorial Mount with Tripod
  • 2"-to-1.25" Eyepiece Adapter
  • Limited Three-Year Warranty
  • Table of Contents
    • 1Description
    Optical Design Newtonian reflector
    Aperture 8.2" / 20.8 cm
    Focal Length 812 mm
    Focal Ratio f/3.9
    Eyepiece Barrel Diameter 2", directly into focuser
    1.25" with included adapter
    Diagonal None
    Finderscope None
    Tripod Stainless steel adjustable height
    2" / 5.1 cm diameter legs
    Mount Type Motorized German equatorial
    Power Source 8 x D-cell batteries
    Optical Tube Dimensions Diameter: 9.3" / 23.5 cm
    Length: 27.6" / 70.0 cm
    Weight 19.8 lb / 9.0 kg
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