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Quattro 250 ST astrophotography telescope (10″)

1,099.95 $ 999.95 $

    • Products Features
    • Steel TUBE (QUATTRO 250 ST):
      Fast focal ratio of f/4.
      Black Diamond P250/F1000 Reflector. This is especially important for astro-photographers dealing with long exposure times. Imaging telescopes made of less thermally stable material can deviate from optimum focus after long time exposures. It can remain in focus for a longer period of time and long exposure images will stay clear and in focus.Tube interiors are equipped with knife-edge ray traced baffles.

      2″ DUAL-SPEED LINEAR POWER FOCUSER (both models): The new linear power focuser utilises 4 precision ball bearings to support the drawtube and provide great stability and zero image shift while supporting a heavy eyepiece or camera. Moving the drawtubeby the roller rather than a rack and pinion ensures exceptionally smooth operation, great feel and precise adjustability. The dual-speed feature has a second focus knob that has a 10:1 speed reduction to provide the super-fine adjustments even the most demanding users can appreciate.

      PYREX MIRRORS: Both models feature paraboloidal primary mirrors made of low thermal expansion Pyrex glass resulting in substantially shorter cooling-down times.

    • It comes with a impressive 0.5 mm Ultra-Thin Secondary Mirror Supports and it offers 56% more Light-Gathering than the 200mm.
  • Specifications
  • Optical DesignReflector
  • Diameter254
  • Focal Length1000mm
  • F/Ratiof/4
  • Highest Practical Power508x
  • Finder Scope8×50
  • Focuser Diameter2″ (50.8mm) Dual-Speed 10:1 Linear Power Focuser
  • Tube Weight15.1 kg
  • Tube Dimensions25.75cmx73cm
  • Shipping Weight18.8 kg
  • Shipping Dimensions106x47x50 cm

S11220

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Marque

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