Sky-Watcher Quattro f4 Imaging Newtonian
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Sky-Watcher Quattro f4 Imaging Newtonian

£419.00
  (2 Reviews)
✓ 2 year warranty
Aperture:  
Tube Material:  

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In stock shipped 1-2 working days.

About this product

Model:  quattro-200-steel
Part Number:  10238

(Photos show 8-inch model) 

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

8-inch or 10-inch apertures with steel tubes and knife-edge ray traced baffles.

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 in our humble opinion the telescope deserves something better. If you agree check out our Moonlite or Starlight Instruments focusers :-) 

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

"The Quattro's tube is lined with a set of nine internal baffle rings. Their main purpose is to cut down on stray light entering the telescope tube, helping to improve image contrast, but they also lend a bit of extra stability to the tube structure....The Quattro-8S is fitted with a Crayford-style focuser that performed well. It has tension adjustment, focus-lock and a 10:1 dual-speed fine focusing option, and also comes with a 2-inch fitting that has a T-thread on its external side. This allows a good connection to be made between scope and camera with the right adaptor ring....Visually, the Pleiades looked like diamonds hanging in space, with a hint of nebulosity visible around the brightest star Merope. The stars were generally crisp and sharp, with good colour on show. The scope is superb for imaging too, delivering shots that appeared to have higher contrast than the other scopes on test."
BBC Sky At Night Magazine (Quattro-8S model)

Sky-Watcher Quattro Review Stargazerslounge

UPDATE: Sky-Watcher have released an optically matched Aplanatic Coma Corrector for optimum performance.  

 

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 

 

NB: 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 contact us before placing an order smiley

Customer reviews

Average Rating (2 Reviews):  
Write a Review and share your opinions!

Rating (max 5):  
Skywatcher Quattro 10S
Friday, 8 November 2013  | 

I bought this mainly because my NEQ6 was struggling with 12" Newt plus guider set-up, an EQ8 is just way out of my budget, much as I'd love to own one!

I have looked at and handled the 8" version, just my opinion here but think the 10" is better of the two, however the 8" scores on being a lot lighter and more compact.

On arrival the packaging was damaged, whatever happened didn't to the OTA but the collimation was way off but easily corrected. The focuser was and is very stiff, this is easily sorted by adjusting the tensioning screws.

Within a few days of purchase I did do a full strip down to flock the top section of the OTA, this is more or less standard for me, you can argue the pros and cons of doing this with me on SGL! However I did find that in stripping down that the 4 screws that secure the focus wheel to the focuser were loose and would have eventually worked free / out also the primary and secondary mirrors had some streaks / smudges from the manufacturing process, with the exception of smudges on the secondary these would not effect optical performance.

Because the focuser is collimatable I did set this as per the Astronomy Shed videos, out of the box it was about 5mm off the measured axis but this had not been noticeable when viewing / imaging prior to the strip down.

Since flocking the OTA I have been out with it almost every clear night, both visually and for imaging it is excellent. My kids like to view the stars so it is often set-up doing a sky tour for them before I kick off imaging. The fast ratio does test your eyepieces I have found my better eyepieces work well and give clear images but the 2" LET that came with my 300PDS really does pick up comma and needs correcting. My other scope is the monster 300PDS and visually not much will match it but the Quattro still produces some excellent views.

For imaging I am very impressed I use a Baader MPCC (which also works in my other scope) and gets good sharp stars to the edge of the image. The field of view is nice and wide, I am able to frame the Witches Broom and Orion Nebulae (M42, M43 and NGC1975) in a single frame on my Canon EOS 350D, the Pleiades were also nicely framed. All have imaged beautifully and I'm very impressed with results so far.

Compared to the 300PDS using a QHY5 camera it did not do as well imaging Jupiter but this down to the 12" scope having 50% more focal length and being able to produce a bigger image on the camera than the Quattro. The image the Quattro did take was sharp and well defined, despite concerns about the oversize secondary reducing definition. To be honest if I didn't have a scope with a longer focal length to compare with I'd be very happy with the image.

In summary I'm very happy with the OTA despite some initial niggles with the focuser, I expect most people buying one would check it over thoroughly before putting one on a mount so this more a niggle than a complaint. I'm still running down my target list but I'd certainly recommend this scope.


Rating (max 5):  
Quattro 10 steel tube
Thursday, 19 July 2012  | 

What a great scope, had it for about a year now. I was almost put of buying this scope due to the warnings about collimation needing to be so accurate and only being suitable for experienced users. I have no experience with reflector scopes and had no problem collimating the scope and found it stayed pretty much spot on, although I only move the scope from house to garden. I have been out in the cold of winter for many hours taking some great pictures and not found that the steel tube causes any problems with focus going off through the night. I think this scope is great value for money......oh! and also good for visual use. I actually got to see some really beautiful sights that I have not seen with smaller scopes that I have owned.

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