Sky-Watcher Quattro 12S f4 Imaging Newtonian
 Sky-Watcher Quattro 12S f4 Imaging NewtonianSky-Watcher Quattro 12S f4 Imaging Newtonian 

Sky-Watcher Quattro 12S f4 Imaging Newtonian

£1,079.00✓ 2 year warranty


1x in stock shipped 1-2 working days

About this product

Model:  Quattro-f4-12S
Part Number:  10237

Sky-Watcher's largest premium imaging Newtonian with a wide field of illumination and fast f4 focal-ratio. 

2" DUAL-SPEED LINEAR POWER FOCUSER: The new linear power focuser moves the drawtube using rollers rather than a rack and pinion for smooth, precise focus adjustment. The dual-speed feature has a second focus knob with a 10:1 speed reduction for super-fine adjustments. The focuser is perfectly adequate, but we think the telescope deserves better. If you agree, please contact us to discuss alternate focusers. 

The paraboloidal primary mirror is made of low thermal expansion glass resulting in shorter cool-down times. 

Regarding baffles: The Quattro-12S features a steel tube with a matte-black interior (it does not contain baffles like the smaller Quattro models). Some like baffles because they can prevent internal reflections and stiffen the tube. Some disagree, saying they push thermal currents into the light path (instead of allowing them to run up the tube and out the front). Both arguments are valid, but neither is definitive. For this, their largest Quattro telescope, Sky-Watcher, chose a smooth baffle-free interior. 

An optically matched Aplanatic Coma Corrector is available for optimum performance.  

Quattro 300 (12-inch) specification

  • Diameter of Primary Mirror 300mm
  • Telescope Focal Length 1200mm (f/4)
  • 9x50 Finderscope
  • Parabolic Primary Mirror
  • 2" (50.8mm) Dual-Speed 10:1 Linear Power Focuser
  • Tube Rings and Dovetail Bar
  • 0.5mm Ultra-Thin Secondary Mirror Supports
  • 44% more Light-Gathering than 250mm 


Total weight: 23kg 
Tube length: 1090mm
Tube diameter: 350mm


Please note: Fast Newtonians are best suited to experienced astronomers. They require precise collimation and a Coma Corrector to reach their full potential. If you are unsure whether one will suit your requirements, please get in touch with us before placing an order smiley

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Q1. Is the mirror made from Pyrex glass.

We are often asked this question. Sky-Watcher do not use Pyrex glass for their mirrors.
They used to (many years ago), but they now use an alternate low-expansion glass. There is no change in performance.
Some retailers still mistakenly use the old 'px' (px for Pyrex) product name. We suspect this is what is causing confusion.