Skywatcher Quattro F4 Imaging Newtonian

The Skywatcher Quattro series are premium quality imaging Newtonians with a wide field of illumination and fast f4 focal-ratios.

8-inch and 10-inch models are available with steel or carbon fibre tubes. Tube interiors have knife-edge ray traced baffles.
CARBON FIBRE TUBE: Carbon fibre is a strong and lightweight material with better thermal stability than steel. 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. With a carbon fibre tube, it can remain in focus for a longer period of time.

2" DUAL-SPEED LINEAR POWER FOCUSER: The new linear power focuser utilises four precision ball-bearings to support the drawtube for excellent stability and zero image shift while supporting a heavy imaging camera and accessories. Moving the drawtube using a roller rather than a rack and pinion ensures an exceptionally smooth and precise focus adjustment. The dual-speed feature has a second focus knob with a 10:1 speed reduction for super-fine adjustments.

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

NB: Like all fast Newtonians the Skywatcher Quattro series are best suited to experienced astronomers. They require precise collimation and a Coma Corrector to reach their full potential.

Technical Specs:

Quattro 200 (8-inch) specification

Diameter of Primary Mirror 205mm
Telescope Focal Length 800mm (f/4)
Note: Eyepieces NOT supplied
9x50 Finderscope
Parabolic Primary Mirror (Pyrex)
2" (50.8mm) Dual-Speed 10:1 Linear Power Focuser
Tube Rings & Dovetail Bar
0.5mm Ultra-Thin Secondary Mirror Supports
77% more Light-Gathering than 150mm

Quattro 250 (10-inch) specification

Diameter of Primary Mirror 254mm
Telescope Focal Length 1000mm (f/4)
Note: Eyepieces NOT supplied
9x50 Finderscope
Parabolic Primary Mirror (Pyrex)
2" (50.8mm) Dual-Speed 10:1 Linear Power Focuser
Tube Rings and Dovetail Bar
0.5mm Ultra-Thin Secondary Mirror Supports
56% more Light-Gathering than 200mm