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This is a Generation II telescope. All updates have been performed on this telescope.
Sporting the large light bucket users have come to expect from a Dob, the Explore Scientific 12" f/5 Truss Tube Dobsonian Telescope
gives users awe-inspiring performance at a reasonable price. Its large
parabolic primary mirror is highly reflective and is engineered to
correct spherical aberration which eliminates distortion across the
entire field of view, especially at the edges. The large 12" aperture
draws in copious amounts of light to show the minutia on the Moon and
planetary surfaces, reveal deep sky objects that smaller scopes simply
cannot not see, and resolve bright star clusters to their core. Its f/5
focal ratio and 10:1 dual-speed helical focuser makes this an ideal
choice for imaging. The fast focal ratio enables devices to capture
images in less time than slower scopes, while the unique focusing
mechanism employed in the helical design gives it the ability to achieve
tack-sharp focusing with zero backlash that rack-and-pinion focusers
are generally unable to. This 2" focuser will accept larger eyepieces so
users can enjoy a truly immersive visual experience and will ensure
larger imaging sensors are completely covered.
The rocker box
weighs-in at just over 15 pounds and provides a rock-steady
observational platform with very low vibration. This rocker mount
features high-altitude bearings with aluminum structures that allow for
fine adjustment flows at high magnifications, and dual radial primary
mirror fans to quickly adjust the temperature to reduce mirror
distortion. Finally, the tension control handle allows users to adjust
the settings allowing them to move the mount easily and smoothly by hand
with minimal vibration and maintain its position when released.