Explore Scientific Ultra Light Dobsonian 406 mm Generation II Telescope

Explore Scientific Ultra Light Dobsonian 406 mm Generation II Telescope

Description

The Explore Scientific Ultra Light Dobsonian 406 mm Generation II represents the pinnacle of the brand’s transportable reflector telescopes. This 16-inch Newtonian combines modern truss-tube architecture with an ultra-rigid aluminum build. Despite its large aperture, the structure is fully collapsible without tools, allowing easy transport and quick field deployment.

With over 3300 times the light-gathering power of the human eye, it is a powerful instrument for deep-sky observation, revealing stunning details in nebulae, galaxies, and star clusters. Its large altitude bearings provide smooth, backlash-free motion even at high magnifications. The optical tube assembly includes a BK-7 mirror in a newly improved mirror cell featuring radial fans for rapid thermal equalization. The mirror remains adjustable during use for precise collimation.

The 2" Crayford-style focuser with 10:1 micro-reduction enables accurate focusing. A long backfocus (45 mm from the 2" adapter, 35 mm with 1.25" reducer) makes this telescope suitable for coma correctors and a variety of accessories. Additional upgrades include a TEFLON/GFK bearing system, laser-marked primary center, reinforced altitude bearings with friction and locking system, and two 1 kg counterweights for precise balance.

Its durable powder-coated aluminum components prevent moisture-related deformation. The whole system disassembles into compact modules that fit even in small cars.

Specifications

• Lightweight open truss tube made from aluminum

• Primary mirror diameter: 406 mm

• Focal length: 1826 mm (f/4.5)

• Mirror material: BK-7 glass

• Enhanced primary mirror cell with fine collimation

• 2" Crayford focuser with 10:1 micro-reduction

• Laser-marked center spot on primary mirror

• Altitude bearings with friction and brake system

• TEFLON/GFK gliding pads for smooth motion

• Universal finder shoe included

• Smooth altitude and azimuth motion

• Powder-coated structure for durability

• Backfocus: 45 mm (35 mm with 1.25" reducer)

• Tool-free assembly

• Zenith viewing height: 1.63 m

• Obstruction: 22%

• Resolution: 0.32 arcseconds

• Secondary mirror diameter: 88 mm

• Requires 12V power for fans (batteries not included)

Additional information

• Transport size:

  • Rockerbox: 550×550×330 mm

  • Mirror box: 480×480×300 mm

  • Truss tubes: approx. 1250 mm

• Total weight: 38.4 kg

• Mirror box: 23.8 kg

• Upper section + base: 10.5 kg

• Truss poles: 2.5 kg

• Altitude bearings: 1.6 kg

• Extended warranty: 5 years

Included items

• 406 mm Dobsonian truss telescope

• LED red dot finder with universal base

• Two 1.0 kg counterweights

• Light shroud for secondary cage

• Collimation tool for primary mirror

• Battery box and pouch for fans

• Extension tube for focuser

• 2" to 1.25" adapter

• Instruction manual