Why is thermal equilibrium so critical? The main issue is "mirror seeing," the turbulence seen through the eyepiece of the telescope when the air above the mirror is different from the mirror itself. Hubble sandwich mirror’s open core and close back design not only allows air to circulate through the mirror, but also provide the maximum structure strength to allow a simpler mirror cell design. Exclusive Sandwich Mirror Technology: Hubble optics sandwich mirror technology has been used to manufacture research-grade optical elements and proven by over a half dozen years of successful applications at research facilities such as NASA, California State Polytechnic University San Luis Obispo, for the US Army, and in amateur telescopes around the world.The UL14 collects 36% more light than a 12" and 96% more than 10" optics, allowing you to resolve significantly fainter objects and more subtle details. In addition, with its f/4.6 focal ratio mirror, the Hubble UL14 telescope has an eyepiece location that can always be reached when you are standing with both feet on the ground: only 60" (1.5 m) from the ground when the UL14 is pointed at zenith. The heaviest component of the UL14 is the primary mirror, which weighs in at about 16 pounds (7,3 kg), and the entire telescope is only about 48 pounds (21,8 kg), which is remarkably light for a 14-inch telescope. Hubble UL14 has been designed to be as light and compact as possible, making the task of transport to your favorite dark-sky site as easy as possible. With a Hubble UL14, you are free to travel to your favorite dark-sky sites anywhere in the world. This Premium Dobsonian telescope is a high-quality, large-aperture telescope optimized in a very light and compact package for extreme portability.
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