Explore Scientific - Generation II - 20-inch Truss Tube Dobsonian Telescope - DOB2036-00

The Explore Scientific 20-inch Truss Tube Dobsonian (Generation II) is the company's largest-aperture telescope, built for deep-sky observers who want maximum light-gathering power in a design that still breaks down for transport. Its 500mm quartz primary mirror collects thousands of times more light than the naked eye, making star clusters, planetary detail, and lunar terrain visible even to inexperienced observers. The truss-tube structure disassembles without tools, so this large-aperture scope can still fit in a small car for a trip to a dark-sky site.

• 500mm f/3.6 quartz primary mirror: 94% reflective aluminum coating with a resistant quartz protection layer and an individual optical test certificate per mirror.
• 1,826mm focal length: Delivers a theoretical maximum magnification of 1,000x and a limiting magnitude of 16.19.
• Tool-free truss disassembly: TIG-welded tube structure breaks down without rivets or screws for transport in a small vehicle.
• Dual mounting plate design: A second mounting plate offset 40 degrees lets the tube top rotate for a favorable viewfinder or TELRAD position.
• Active cooling fans: Four side-mounted fans plus a large fan under the primary mirror speed temperature equilibrium and reduce tube seeing.
• Includes 2.5in HEX focuser: 10:1 reduction helical focuser ships with an LED red dot finder and collimation assist tool.