20-inch Truss Tube Dobsonian Aperture Telescope

Original price was: ₹499,000.00.Current price is: ₹449,000.00. excl. 18% GST

Available on backorder

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
Dobsonian Mounting
Weight of Rocker Box + Mirror Box	49 kg, weight to be lifted at wheelbarrow handle end – 9.5 kg
Wheelbarrow Length	1900mm
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 Ladder (Bathla) Wheelbarrow Handles Shroud