Explore Scientific


Explore Scientific 10" f/5 Newtonian Truss Tube Dobsonian Telescope

Sporting the large light bucket users have come to expect from a Dob, the Explore Scientific 10" f/5 Truss Tube Dobsonian Telescope provides you with an excellent viewing experience.

Its large, highly reflective, parabolic primary mirror corrects spherical aberration to eliminate distortion across the entire field of view, especially at the edges, with a 24% secondary mirror obstruction.

The entire structure has been optimized for maximum stiffness with minimal weight giving you stability and effortless mobility.


  • Dual radial primary mirror fans adjust the mirror temperature to reduce distortion (runs on eight user-supplied AA batteries)
  • Highly reflective mirrors increase image brightness
  • 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
  • Accepts 2" eyepieces and accessories
  • Helical focusers use a toothless design that allows for smooth and precise focusing without backlash
Focal Lenght 1270mm
Focal Ratio f/5
Primary mirror diameter 25.4cm
Secondary obstruction 24%
Mirror cell support points 9
Truss pole length 64cm
Truss pole diameter 20mm
Secondary cage assembly diameter 33cm
Secondary cage assembly weight 6.5lb
Secondary cage assembly height 17cm
Mirror box/rocker box height 42cm
Mirror box weight 35lb
Height to center of eyepiece at zenith 119cm
Theoretical limiting stellar magnitude 0.46 arcsec
Theoretical Rayleigh limit 0.54 arcsec
Theoretical limiting magnitude 14.7
Theoretical maximum magnification 500x


Note: Mirror weight can vary because of the manufacturing process; these values are approximate