Sky-Watcher

Quattro 10" 250P Imaging Newtonian


  • Sale
  • $760.00
  • Regular price $815.00

Available to Order, usually 7-10 days to ship.

This Product Qualifies for FREE ECONOMY SHIPPING (Ships directly from Sky-Watcher)


  • 254 mm Newtonian reflector
  • 1000 mm (f/4)
  • Fully multi-coated borosilicate mirrors
  • 2” dual-speed 10:1 linear power focuser
  • 8×50 finderscope
  • Tube rings with V-style dovetail bar

The new Sky-Watcher Quattro Imaging Newtonian with dual-speed focuser incorporates a superb mirror-set with two significant advantages over competing products. A 2″ dual-speed 10:1 ratio focuser is included for excellent focusing precision. Additionally, the tube length has been slightly shortened to optimize performance for prime-focus photography. Even better performance for astro-photography, and visual use, can be achieved when used in combination with the Sky-Watcher Quattro coma corrector.

SKU S11220
UPC 050234112208
Optical Info
Optical Design Newtonian
Mirror Coatings 94% Aluminum
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 0.46
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)
SKU: S11220
Barcode: 050234112208