|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||Hubble Optics, Hong Kong|
|Mirror physical/optical diameter||518 mm / 508mm|
|Mirror edge thickness||58 mm|
|Mirror weight||17 kg|
|Mirror coating||Aluminium + SiO2 Protective coating 92% reflectivity|
|Focal length / focal ratio||2032 mm, f/4|
|Mirror Cell||18 point flotation cell|
|Mirror cell material||Stainless Steel (304 grade)|
|Secondary mirror size||100 mm minor axis|
|Upper Tube Assembly (UTA)||Dia 595 mm, Height 340 mm, 5.7 kg, covered with light eater black foam|
|Lower Tube Assembly (LTA)||Height. = 800 mm, Width = 750mm|
|Weight of Rocker Box + Mirror Box||49 kg, weight to be lifted at wheelbarrow handle end – 9.5 kg|
|Eyepiece height at zenith||2400mm|
|Full height of telescope||2600mm|
|Truss Tube Length, Dia, Thickness, weight||1692mm, 32mm, 1.2mm, 5.8KG, All 8 tubes|
|Teflon Side bearing / Ground Board||32X32X15mm, 4 pieces/50X50X5mm 4 piece|
|Side bearing diameter||652mm|
|Rocker Box wall thickness||38mm|
|Wheel barrow Additional Thickness||Add 180mm both sides, 360mm|
|Shroud||Opaque two way stretchable Lycra|
|Supplied Accessories||Telrad Finder,
Crayford Focuser for precise focus,
25mm Plössl Eyepiece (1.25″),
Alan key ‘T’ for collimation
Dust covers for primary and secondary mirrors
20-inch Truss Tube Dobsonian Aperture Telescope
excl. 18% GST
- Largest Aperture telescope commercially available for sale in India.
- Made in India product comparable with global brands.
- 20″ or 508mm aperture
- Smooth operations
- Free Ladder included in the price.
Available on backorder
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