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

Special Order

There are additional custom delivery charges that will be due at time of shipping. In the US this charge can be $600 or more.

DESCRIPTION:

The Explore Scientific 20-inch f/3.6 Truss-Tube Dobsonian is the perfect tool for deep sky observers. It boasts our largest aperture telescope, with a 500mm mirror that collects 5100 times more light than the naked eye. Even inexperienced observers will be able to see details on planets and deep sky objects. Bright star clusters are resolved to the core, and the sight of the terminator on the moon is unforgettable.

The fast 20" f3.6 main mirror and large 120mm secondary mirror are made of high-quality quartz material, which reduces cooling time to a minimum and ensures the Dobsonian is quickly ready for use. Each main mirror comes with an individual optical test certificate, guaranteeing the highest capacity. The optical surface has a high-quality aluminum coating with 94% reflectivity and an extremely resistant quartz protection layer. The mirror is resistant to frequent dew fogging and cleanups, ensuring a long service life.

The Dobsonian telescope has revolutionized the hobby, providing an ingenious combination of simple yet effective mechanisms with the greatest possible opening. No other telescope type gives you as much light for your money as a good Dobson. Disassembly of the scope without tools ensures trouble-free transport of this great scope, even in small cars. The entire structure has been optimized for maximum stiffness with minimal weight.

A complete redesign of this Dobsonian was necessary to ensure significantly increased requirements for stiffness and load-bearing capacity of the optical components. All connections of the tube structure were made in the TIG welding process, with no rivets or screws used. This has made it possible to produce this 20" lightweight Dobsonian incredibly stiff despite its low weight.

The Dobsonian comes with a second 40° displaced installed mounting plate with a viewfinder shoe, allowing for the rotation of the tube top in combination with a favorable position of the viewfinder tube or the mounting of an additional TELRAD viewfinder. The six supporting feet underneath the rocker box offer perfect stability and guarantee smooth tracking in azimuth. Four smaller fans and a large fan under the main mirror allow for quick adaptation to ambient temperature and reduce tube seeing (boundary layer removal). The lateral altitude wheels can comfortably be stowed in the foam layers of the mirror box.

The Dobsonian includes a 2.5" HEX focuser with helical gearing and a 10:1 reduction, an LED Red Dot Finder, a collimation assist tool, a soft light baffle, and two radial main mirror fans for fast temperature equilibrium.

The scope is ready for the use with our optional coma corrector.

CA Residents: Prop 65 WARNING(S)

SPECIFICATIONS:

WARRANTY:

Explore STAR Transferrable Product Warranty when product is registered within 60 days of purchase. Click Here to register.

MANUAL:

To download printable PDF manual Click Here

VIDEO:

https://youtu.be/U6Bi4ytK598 

https://youtu.be/1uUWHAv0UEc