Περιγραφή
The Stargate series of Dobsonian telescopes have thin mirrors with a honeycomb structure. These are not only light, but also cool down quickly. This results in less air turbulence above the mirror surface (mirror seeing).
Thanks to their truss tube design, these large telescopes are still easy to transport.
Sky-Watcher StarGate Dobsonians with their huge light gathering capabilities provide the ultimate WOW factor experience for aficionados of visual astronomy. The elegant and rigid all metal truss tube design is easily transportable when unassembled, and can be assembled and ready for use in less than 20 minutes. The mount provides smooth manual operation in both Alt and Azimuth axes. Delivers outstanding performance on Planetary and Deep-Sky objects.
PARABOLIC PRIMARY MIRRORS: Features High Quality Parabolic Primary Mirrors to eliminate spherical aberrations inherent in ‘fast’ focal lengh reflectors with spherical primary mirrors. The mirrors are parabolized to bring all the light rays to the same focal point to give sharp, constrasty images, which are full of detail.
SKY-WATCHER DELUXE MIRROR COATINGS: Most reflectors today usually have a coat of aluminium as the mirror surface and then an overcoat of silicon monoxide or silicon dioxide to protect it. Silicon dioxide produces a much more durable coat than silicon monoxide but requires specialized equipment to apply it and is therefore more expensive. Protection is needed, because in most reflectors, the mirror is open to the elements and deterioration of the reflective layer reduces the resolution of the telescope. ALL Sky-Watcher reflectors are Multi-Coated with Silicon Dioxide as standard for Optimum Durability and Long Term Performance.
The GoTo version of the Sky-Watcher Dobsonian comes with a SynScan control. The hand box is used to select any object from the pre-programmed database of 42,900 objects and the telescope then slews to this fully automatically.
The patented Freedom Find dual encoder system enables you to move the telescope by hand without the computerised controls losing their alignment. This means you can pan across the skies by hand. This is quiet, quick and saves energy.
