Sky-Watcher Quattro 12S f4 Imaging Newtonian

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Frequently bought with this product:

	Bob's Knobs StellaLyra / Celestron / Sky-Watcher Newtonian Collimation Knobs Add to Basket:----------Choose:  Primary Adjustment & Lock Knobs:  + £29.00Choose:  Secondary Adjustment Knobs (30mm):  + £25.00Choose:  Secondary Adjustment Knobs (35mm):  + £25.00
	Oklop Lift and carry straps for 8-12" Newtonians with neckband  + £38.00
	StellaLyra Premium Cheshire Collimating Eyepiece  + £37.00
	Oklop Padded Bag for 300/1200 Newtonians  + £149.00

About this product

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

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 

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