Explore Scientific 12" f/5 Truss Tube Dobsonian Telescope

BH #EXDOB124500 • MFR #DOB1245-00
Explore Scientific
Explore Scientific 12" f/5 Truss Tube Dobsonian Telescope
Key Features
  • 12" / 305mm Aperture
  • 1525mm Focal Length, f/5 Focal Ratio
  • 10:1 2" Two-Speed Helical Focuser
  • Red-Dot LED Finderscope
Sporting the large light bucket users have come to expect from a Dob, the Explore Scientific 12" f/5 Truss Tube Dobsonian Telescope gives users awe-inspiring performance at a reasonable price. Its large parabolic primary mirror is highly reflective and is engineered to correct spherical aberration which eliminates distortion across the entire field of view, especially at the edges. The large 12" aperture draws in copious amounts of light to show the minutia on the Moon and planetary surfaces, reveal deep sky objects that smaller scopes simply cannot not see, and resolve bright star clusters to their core. Its f/5 focal ratio and 10:1 dual-speed helical focuser makes this an ideal choice for imaging. The fast focal ratio enables devices to capture images in less time than slower scopes, while the unique focusing mechanism employed in the helical design gives it the ability to achieve tack-sharp focusing with zero backlash that rack-and-pinion focusers are generally unable to. This 2" focuser will accept larger eyepieces so users can enjoy a truly immersive visual experience and will ensure larger imaging sensors are completely covered.
Special Order
Expected availability: 7-14 business days
On Display in Store
$1,799.99
Sales and export of this item to South Korea are prohibited.
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Explore Scientific DOB1245-00 Overview

  • 1Description
  • 2Performance
  • 3Mount
  • 4Focuser

Sporting the large light bucket users have come to expect from a Dob, the Explore Scientific 12" f/5 Truss Tube Dobsonian Telescope gives users awe-inspiring performance at a reasonable price. Its large parabolic primary mirror is highly reflective and is engineered to correct spherical aberration which eliminates distortion across the entire field of view, especially at the edges. The large 12" aperture draws in copious amounts of light to show the minutia on the Moon and planetary surfaces, reveal deep sky objects that smaller scopes simply cannot not see, and resolve bright star clusters to their core. Its f/5 focal ratio and 10:1 dual-speed helical focuser makes this an ideal choice for imaging. The fast focal ratio enables devices to capture images in less time than slower scopes, while the unique focusing mechanism employed in the helical design gives it the ability to achieve tack-sharp focusing with zero backlash that rack-and-pinion focusers are generally unable to. This 2" focuser will accept larger eyepieces so users can enjoy a truly immersive visual experience and will ensure larger imaging sensors are completely covered.

The rocker box weighs-in at just over 15 pounds and provides a rock-steady observational platform with very low vibration. This rocker mount features high-altitude bearings with aluminum structures that allow for fine adjustment flows at high magnifications, and dual radial primary mirror fans to quickly adjust the temperature to reduce mirror distortion. Finally, the tension control handle allows users to adjust the settings allowing them to move the mount easily and smoothly by hand with minimal vibration and maintain its position when released.

Performance

  • 12" aperture
  • f/5 focal ratio
  • 1525mm focal length
  • Highly reflective mirrors increase image brightness
  • 24% secondary mirror obstruction
  • Dual radial primary mirror fans adjust the mirror temperature to reduce distortion
    • Runs on eight user-supplied AA batteries

Mount

  • Manual rocker mount design
  • High altitude bearings for a wide adjustment and travel range
  • Tension control handle allows for smoother rotation to reduce vibrations and limit over-compensation

Focuser

  • Dual-speed helical
  • Accepts 2" eyepieces and accessories
  • Helical focusers use a toothless design that allows for smooth and precise focusing without backlash
UPC: 812257015573

Explore Scientific DOB1245-00 Specs

Optical DesignDobsonian reflector
Aperture12" / 305 mm
Focal Length1525 mm
Focal Ratiof/5
Eyepiece Barrel Diameter2"
DiagonalN/A
FinderscopeRed dot LED
TripodNone
Mount TypeManual alt-az
Power Source8 x AA batteries, for fans
Optical Tube DimensionsNot specified by manufacturer
WeightPrimary mirror: 50.5 lb / 22.9 kg
Rocker box: 15.7 lb / 7.1 kg
Total: 66.2 lb / 30.0 kg
Packaging Info
Package Weight81.55 lb
Box Dimensions (LxWxH)40.08 x 21.7 x 18.1"
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