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Quattro 250P Imaging Newtonian 10"

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$1,180.00
SKU S11220
  • 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
  • Tube rings, mounting plate, eyepiece adapters, and 9x50 finderscope included
  • Description
  • Specifications


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.

 

SKUS11220
UPC050234112208
Optical Info
Optical DesignNewtonian
Mirror CoatingsRadiant Aluminum Quartz (RAQ)™ coatings with 94% reflectivity
Glass TypeBorosilicate
True Aperture (mm)257
Primary Aperture (mm)254
F/Ratio4
Focal Length (mm)1000
Secondary Diameter89mm
Secondary Obstruction (by diameter)35%
Secondary Obstruction by Area12%
Observational Info
Dawes Limit0.46
Rayleigh Limit0.55
Limiting Mag.14.5
Minimum Magnification36
Maximum Magnification500
Light Gathering (compared to next size down)57%
General Info
Focuser2" Dual Speed Crayford
OTA Length (Retract/Ext.)36.5"
OTA Outer Diameter11.375"
OTA Weight (with accessories)36.5
Accessories
Included Finder9x50 Finder
Included DiagonalNo
Mounting AccessoriesRings/V-Rail
Included EyepiecesNone
Included CaseNo
CorrectorNo (optional)
Shipping Weights & Dimensions