NATIONAL GEOGRAPHIC 76/350 Compact Dobsonian Telescope

• A Dobsonian telescope is easy to operate
• Mirror diameter: 114mm / Focal length: 50mm
• Mount: azimuthal Dobson table mount
• Magnification: 18x-117x
• What’s included: telescope, eyepiece, accessories

Alt-Azimuth-mounted Newtonian telescopes is a design popularized by John Dobson in 1965 and credited with vastly increasing the size of telescopes available to amateur astronomers. Dobson’s telescopes featured a simplified mechanical design that was easy to manufacture from readily available components to create a large, portable, low-cost telescope. The design is optimized for observing faint, deep-sky objects such as nebulae and galaxies. This type of observation requires a large objective diameter (i.e. light-gathering power) of relatively short focal length and portability for travel to less light-polluted locations.

Dobsonians are intended to be what is commonly called a “light bucket” operating at low magnification, and therefore the design omits features found in other amateur telescopes such as equatorial tracking. Dobsonians are popular in the amateur telescope making community, where the design was pioneered and continues to evolve. The term Dobsonian is currently used for a range of large-aperture Newtonian reflectors that use some of the basic Dobsonian design characteristics, regardless of the materials from which they are constructed, but can also be applied to smaller diameter designs.

Technical Specifications and Features
• Diameter: 76mm
• Focal length: 350mm
• Magnification: 18x-117x
• Eyepieces: 6, 20mm
• Barlow lens
• Compass
• Moon filter
• Included in delivery: OTA, eyepieces, barlow lens, moon filter