TELESCOPE SPECIFICATION Optical Design Newtonian - TopicsExpress

TELESCOPE SPECIFICATION Optical Design Newtonian Reflector. Diameter 135mm Focal Length 1100mm Mirror Cell Stability treated die-cast alluminum, provide better and stable alignment. Secondary Mirror Diameter 36 Focal Ratio F/ 8 Highest Practical Power 270 Faintest Steller Magnitude 12.7 Resolving Power 0.9 Arc - Seconds. Finder Scope Red Dot finder with two-position brightness control Focuser diameter 1.25 Helical rack and pinion moment Eyepiece 1.25OD 1) HR20mm efl, 2) HF6mm efl, Magnification with eyepiece 55x and 183.3x Variable Barlow 1.25OD 20mm: 82.50x, 110x, 137.50x, 165x 6mm: 274.95x, 366.6x, 458.2x, 549.9x Mount type Dobsonian Tripod Wooden Base Accessories tray Eyepiece Holder Tube Weight 4 Kg Tube dimension 17cm Dia, x 102cm length Net weight 18 Kg Shipping Weight Within 21 Kg Shipping Carton Dimension 110 x 46 x 34 cm3 The following items are FREE with the telescope listed above. Sky Astronomy (Software) Level 1 and 2: CD Variable Barlow (1.5x - 2x - 2.5x - 3x) Collimination Tool (for Newtonian) Directional Compass FREE Micro Fiber (Anti-Static) Cleaning cloth Optics Cleaning Fluid COLOUR POSTER 17.5 x 22.5 one 110 Messier Object Locator A4 size front back colour print 109 Deep Sky CALDWELL Catalogue A3 size front back colour print COLOUR POSTER Moons of the Solar System 12 x 16 one Star Dial - Identifying Stars & Constellations Various Astronomical Post-Card (SET-3) Desiccant Cap - Refillable desiccant cap to protect fine optics Astronomical Telescope - user guide this is 17000 Rupees

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