Brand: Sky-Watcher

Sky-Watcher Quattro 250P 10" Imaging Newtonian Telescope OTA (S11220)

S11220

Brand: Sky-Watcher

Sky-Watcher Quattro 250P 10" Imaging Newtonian Telescope OTA (S11220)

S11220

The Quattro imaging Newtonian is an affordable, large aperture astrograph, ideal for users searching for a fast imaging system that will work for both astrophotography and visual astronomy.
  • 254mm aperture, 1000mm focal length
  • Fast f/4 focal ratio
  • Parabolic mirror designed for imaging with 94% reflectivity
  • 10:1, dual-speed, 2-inch Crayford-style focuser
  • Oversized secondary mirror produces greater illumination for full-frame DSLR and CCD cameras
$1,180.00 USD

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$1,180.00 USD

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Product Description

The Quattro imaging Newtonian is an affordable, large aperture astrograph, ideal for users searching for a fast imaging system that will work for both astrophotography and visual astronomy. Boasting a swift f/4 focal ratio, this astrograph is can produce an exposure 6x faster than the average 8-inch f/10 Schmidt Cassegrain telescope. Although designed as an imaging optical tube, these Newtonians also produce bright and detailed viewing for visual astronomy.

Like all Sky-Watcher reflectors, the Quattro imaging Newtonian features borosilicate mirrors coated with Sky-Watcher's proprietary Radiant Aluminum Quartz (RAQ), producing 94% reflectivity. The tube is constructed with rolled steel, then coated with Sky-Watcher's signature glossy metal-flake Black Diamond finish. The OTA uses an oversized secondary mirror providing greater illumination for DSLRs and CCDs using full-frame sensors, and an optional coma corrector is available for those who want to take their imaging to the next level.

Included with the Quattro imaging Newtonian is a 10:1 dual-speed 2-inch Crayford-style focuser, 1.25 and 2-inch eyepiece adapters, a 9x50 finderscope, tube rings, and a V-style dovetail plate.

What can I see with a Sky-Watcher Quattro 250P 10" Imaging Newtonian Telescope OTA (S11220)?

Here are some simulated views of common objects. Results with your telescope will vary with viewing conditions, obrits, equipment and more.

Jupiter with

25mm Eyepiece - 40x Magnification

(Sold Separately)

Jupiter with

10mm Eyepiece - 100x Magnification

Sold Separately

Jupiter with

5mm Eyepiece - 200x Magnification

Sold Separately

Moon with 25mm Eyepiece

40x Magnification

(Sold Separately)

Moon with 10mm Eyepiece

100x Magnification

Sold Separately

Moon with 5mm Eyepiece

200x Magnification

Sold Separately

Andromeda with 36mm Eyepiece

28x Magnification

Sold Separately

Andromeda with 25mm Eyepiece

40x Magnification

(Sold Separately)

Andromeda with 10mm Eyepiece

100x Magnification

Sold Separately

What's in the Box

  • SkyWatcher Quattro 10" Imaging Newtonian Reflector Telescope OTA
  • 2" Dual Speed 10:1 Crayford-Style Focuser
  • 9x50 Finderscope and Bracket
  • Tube Rings with Vixen Style "V" Dovetail Bar

Specifications

Optical Info
Optical Design Newtonian
Mirror Coatings Radiant Aluminum Quartz (RAQ) coatings with 94% reflectivity
Glass Type Borosilicate
True Aperture (mm) 257
Primary Aperture (mm) 254
F/Ratio 4
Focal Length (mm) 1000
Secondary Diameter 89mm
Secondary Obstruction (by diameter) 35%
Secondary Obstruction by Area 12%
Observational Info
Dawes Limit 46%
Rayleigh Limit 0.55
Limiting Mag. 14.5
Minimum Magnification 36
Maximum Magnification 500
Light Gathering (compared to next size down) 57%
General Info
Focuser 2" Dual Speed Crayford
OTA Length (Retract/Ext.) 36.5"
OTA Outer Diameter 11.375"
OTA Weight (with accessories) 36.5
Accessories
Included Finder 9x50 Finder
Included Diagonal No
Mounting Accessories Rings/V-Rail
Included Eyepieces None
Included Case No
Corrector No (optional)

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