12-inch Aperture Telescope

12-inch Aperture Telescope

294,000.00

Price includes GST

12″ f/5.0 Truss Tube Dobsonian Telescope

The 12″ telescope is our smallest truss tube telescope and it is the most portable one. In amateur astronomy circles there is an oft repeated quotation that “The Best Telescope is the one that gets used the most”. The easy portability combined with a large aperture of the the 12-inch is a distinct advantage. The 12-inch truss tube telescope may even be considered more portable than the 10-inch closed tube Dobsonian.

 

Aperture Telescopes 12-inch Truss Tube Dobsonian is the smallest among the large telescopes made by us. This telescope combines easy portability along with good light collection from the celestial objects. This truss tube telescope features quick assembly, repeatable alignment, extremely smooth movement and quality optics.
Big telescopes like our 12-inch perform very nicely on planets and Moon even from the city and its light polluted sky, the 12-inch telescope can resolve great details on Jupiter, Mars and Saturn, especially in the winters when the sky is steady. The views of the Moon, especially the terminator portion are nothing short of stunning. The resolution of a telescope depends on the diameter of the primary and the 12-inch telescope has a very good resolution useful for planetary views.

A 12-inch telescope in the city also shows great views of star clusters in the city conditions. The brightest of the globular star clusters look just about the same through a 10-inch scope in a city as they do through a 4-incher at a dark site, incredibly beautiful
When you take the 12-inch telescope to the hills, or dark places like villages, it gathers a lot of light as compared to the 8-inch and the 10-inch telescopes. Deep sky objects jump out of the eyepiece. Dust lanes of Andromeda galaxy become visible, you can see the faint outer regions of the Orion Nebula clearly. Let the Orion Nebula drift across the field of view, without disturbing the 12-inch, and you will be able to see details of the nebula till far out. Faint Messier objects like M76, M97, M61 and many more can be seen and observed in great detail.

The 12-inch is the baby of the truss tube telescopes from Aperture Telescopes. It is far easy to carry the telescope, as it collapses in three parts, viz. Upper tube assembly which is light weight; Truss tubes which is the lightest part. The heaviest part is the Lower Tube Assembly, and we provide a wheel barrow to move it around as well as put it in the boot of a car.

A truss is an assembly of straight columns that create a rigid structure. The columns of a truss are organized so that the assemblage as a whole behaves as a single object. A truss is made up of a web of triangles joined together to enable the even distribution of weight and the handling of changing tension and compression without bending or shearing. Truss Tubes are used on our larger telescopes as there are advantages to using the truss set up. Truss tubes makes a very strong optical tube with little or no vibrational motion or slipping. This is important with telescopes because the slightest unwanted motion can ruin the image. Second, the truss set up is very light. Trusses add great strength while drastically reducing weight of the telescope. Trusses also increase portability as they can be dismantled to carry and assembled quickly for observation.

Our Dobsonians feature Teflon bearings and move smoothly in both axes. The altazimuth mount is rock solid. We use marine plywood instead of popular MDF board in imported telescopes. The marine plywood covered with laminate becomes weatherproof, for a long duration, as compared to MDF which warps with dew and moisture, and becomes unusable over a short time.

The telescope comes with a Plössl eyepiece 25mm (50x), 1.25" standard. We provide the best zero power finder - Telrad, to locate objects in the sky easily.

SPECS

Download Specifications Sheet

12-inch Truss Tube Dobsonian

 

Telescope Design Truss Tube Collapsible Dobsonian
Materials used Stainless Steel, Water proof marine ply, Veneer, laminate
Finish Hard PU clear weatherproof paint
Primary Mirror
Mirror maker Guan Shang Optical, Taiwan
Mirror physical / optical diameter 303 mm / 300 mm
Mirror edge thickness 35 mm
Mirror weight 6.5 kg
Mirror coating Aluminium + SiO2 Protective coating 92% reflectivity
Focal length / focal ratio 1505 mm, f/5
Mirror Cell 9 point flotation cell
Mirror cell material Stainless Steel (304 grade)
Secondary mirror size 65 mm minor axis
Upper tube assembly (UTA) Dia 422 mm, Height 304 mm, 4.4 kg, covered with light eater black foam
Lower tube assembly (LTA) Height. = 600 mm, Width = 565mm
Dobsonian Mounting
Weight of Rocker box + mirror box 27 kg, weight to be lifted at wheelbarrow handle end – 8.8 kg
Wheelbarrow length 1530 mm
Eyepiece height at zenith 1450 mm
Full height of telescope 1608 mm
Truss tubes length, dia., thickness, wt 880 mm, 32 mm, 1.3 mm, 2.5 kg, all 8 tubes
Teflon Side bearing / Ground Board 32 x 32 x 5mm, 4 pieces / 50 x 50 x 5mm, 4 pieces
Side bearing diameter 390 mm
Rocker box wall thickness 28 mm
Wheel barrow additional thickness Add 180 mm both sides, 360 mm
Shroud Opaque two way stretchable lycra
What’s in the box? Telrad Finder,

Crayford Focuser dual speed.

25mm Plössl Eyepiece (1.25″),

Alan key ‘T’ for collimation
Dust covers for primary and secondary mirrors,

Wheelbarrow handles

Shroud

 

Optional Accessories

Set of five eyepieces,

Laser collimator,
Complete telescope cover for storage,
Finderscope – refractor type

 

IN THE BOX

What’s in the box? Telrad Finder,

Crayford Focuser dual speed.

25mm Plössl Eyepiece (1.25″),

Alan key ‘T’ for collimation
Dust covers for primary and secondary mirrors,

Wheelbarrow handles

Shroud

OPTIONALS

 

Optional Accessories

Set of five eyepieces,

Laser collimator,
Complete telescope cover for storage,
Finderscope – refractor type

Why Buy Aperture

Why Buy Aperture Telescopes
Top Reasons to purchase Superior Dobsonians from Aperture Telescopes

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