Explore Scientific Ultra Light 12' (68827)

No telescope type has influenced amateur astronomy as radically as the Dobsonian telescope. Before the introduction of this telescope type by John Dobson the vast majority of amateur telescopes were small inadequate refractors on shaky mounts – just good enough to show the polar regions on Mars or the rings of Saturn. Bigger telescopes, like the Schmidt-Cassegrain telescopes, were restricted to the relatively small group of amateurs that could afford them. The brilliant combination of simple – but effective – mechanics and the largest aperture available led to a worldwide triumph of this concept. No other telescope type offers you so much light for your money as a good Dobson.

We have taken the motto 'held together by gravity and driven by yoghurt power' and offer a modern version of the classic – designed by amateur astronomers for amateur astronomers. Despite its large aperture the telescope can be transported easily even in small cars and is assembled within minutes without tools. The construction was optimized for maximum rigidity with a minimum of mass. The combination of big altitude wheels and an optimized aluminium-sandwich construction allows for small movements even at high magnifications. The focus position is already positioned to accept our coma-corrector. The ideal workhorse for the deep-sky enthusiast. A telescope with 305mm aperture gathers more than 1800-times more light than the naked eye. Details on planetary surfaces stand out even to unexperienced observers, and countless deep-sky objects show details. Bright globular clusters are resolved down to the core and the view of the lunar terminator will provide an unforgettable experience.

Features:

• Truss Dobsonian telescope in full aluminium construction
• Slider bearings made from TEFLON and GFK for smooth and precise movement
• Improved main mirror cell with completely redesigned mechanics
• Altitude bearings with new designed brake and friction system
• Larger feet to improve stability
• Universal finder slot to enable an easy finder upgrade
• Counter-weight system included – 2 x 1.0kg
• Quick-lock fasteners with new spring-loaded design for comfortable use
• Powder-coated yellow altitude wheels to improve durability
• Laser engraved central mark on main mirror
• Dust protection caps for open aperture and eyepiece holder

The kit includes:

• Truss Dobsonian telescope
• LED finder with standard finder slot
• Stray light shield for secondary cage
• Main mirror collimation tool
• Battery compartment with bag for fans
• Counter-weights 2 x 1.0kg
• Extension tube for focuser
• Reducer 2'/1.25'
• Manual

Марка Explore ScientificГаранция, години 2EAN 0611901512877Размер на опаковката (Д x Ш x В), cm 104x55x48Транспортно тегло, kg 31.8Оптична конструкция рефлекторен телескопОптична схема НютоновМатериал на оптиката BK-7Диаметър на лещата на обектива (апертура), mm 305Диаметър на вторичното огледало, mm 75Фокусно разстояние, mm 1525Най-голямо практическо увеличение, x 600Отношение на апертурата f/5Прагова стойност на резолюцията, ъглови секунди 0.43Диаметър на тръбата на окуляра, in 1,25/2Визьор червена точка, светодиодФокусиращо устройство 2', 2-скоростно с рейка и пиньон (10:1), с хеликоидална предавкаМонтировка ДобсъноваМатериал на оптичната тръба алуминийПотребителск о ниво опитни потребители, за професионалистиНаблю даван обект планети от Слънчевата система и обекти в далечния Космос