Explore Scientific 12" Truss Tube Dobsonian Telescope

Description

Product Highlights

12" / 305mm Aperture
1525mm Focal Length, f/5 Focal Ratio
10:1 2" Two-Speed Helical Focuser
Red-Dot LED Finderscope
Floor-Based Manual Alt-Az Mount
Altitude Tension Clutch
Dual Radial Main-Mirror Fans
Tool-Free Breakdown and Assembly

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.

Performance

12" aperture
f/5 focal ratio
1525mm focal length
Highly reflective mirrors increase image brightness
24% secondary mirror obstruction
Dual radial primary mirror fans adjust the mirror temperature to reduce distortion
- Runs on eight user-supplied AA batteries

Mount

Manual rocker mount design
High altitude bearings for a wide adjustment and travel range
Tension control handle allows for smoother rotation to reduce vibrations and limit over-compensation

Focuser

Dual-speed helical
Accepts 2" eyepieces and accessories
Helical focusers use a toothless design that allows for smooth and precise focusing without backlash

Specifications:

Optical design	Newtonian Reflector
Mount Type	Dobson
Objective diameter (mm)	305
Focal length (mm)	1525
Maximum recommended magnification	600
Finderscope	DeLuxe Red Dot Finder
Field of application	Deep Sky Observation Lunar observation Planetary observation
Angular resolution (arc seconds)	0.43
Mount type	Dobson
Focus Group	Visual enthusiasts Advanced Amateurs
Warranty (Years)	3
Eyepiece Barrel Diameter (mm)	50.8
Secondary mirror diameter (mm)	73
Obstruction (%)	24
Material OTA	Aluminium
Focusing system	2" Crayford-Focuser with 10:1 Reducer
Rain/Dust protection caps	Dust protection caps for open aperture and eyepiece holder
Primary mirror diameter (mm)	305
Aperture ratio	5
Transportability	very good
Colour	black
Net Weight total (incl. accessories) (kg)	29.8

Packaging Info


Package Weight	99.85 lb
Box Dimensions (LxWxH)	40.08 x 21.7 x 18.1"

In the Box

Explore Scientific 12" f/5 Truss Tube Dobsonian Telescope

Red Dot LED Finderscope

Collimation Assist Tool

Limited 1-Year Warranty, Extendable to Transferrable Lifetime Warranty with Registration

Suggested Accessories: 2-inch HR Coma Corrector ; Explore Scientific Waterproof Eyepieces ; Focal Extenders

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Explore Scientific 12" Truss Tube Generation II Dobsonian Telescope

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