Sky-Watcher 10” Quattro 250P Imaging Newtonian Telescope
Stock count is accurate & shown in real time.
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
- This item is out of stock.
- Sign up for back-in-stock alerts to be notified when this item becomes available (account login required).
Contiguous US / Lower 48:
Free shipping applies to orders over $50 using our chosen carrier/method. Faster paid options are available at checkout.
Alaska, Hawaii & US Territories:
Free shipping applies to many—but not all—products. Enter your ZIP code in cart or upon checkout to confirm options and costs.
International:
International orders do not qualify for free shipping. Shipping, duties, brokerage, tariffs, and taxes are the customer’s responsibility. Some items may be restricted due to export, size, or manufacturer limitations.
- 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
The Sky-Watcher Quattro 250P imaging Newtonian 10" # S11220 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.
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: 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
- Focuser draw tube thread: male M54x0.75 (after removing eyepiece holder)
Accessories:
- Included Finder: 9x50 Finder
- Included Diagonal: No
- Mounting Accessories: Rings/V-Rail
- Included Eyepieces: None
- Included Case: No
- Corrector: No (optional)
Other Information
- Country of Manufacture: China
The Sky-Watcher Quattro 250P imaging Newtonian 10" # S11220 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.
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: 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
- Focuser draw tube thread: male M54x0.75 (after removing eyepiece holder)
Accessories:
- Included Finder: 9x50 Finder
- Included Diagonal: No
- Mounting Accessories: Rings/V-Rail
- Included Eyepieces: None
- Included Case: No
- Corrector: No (optional)
| Manufacturer | Sky Watcher |
|---|---|
| Telescope Focal Length | 901 - 1000mm |
- 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
The Sky-Watcher Quattro 250P imaging Newtonian 10" # S11220 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.
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: 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
- Focuser draw tube thread: male M54x0.75 (after removing eyepiece holder)
Accessories:
- Included Finder: 9x50 Finder
- Included Diagonal: No
- Mounting Accessories: Rings/V-Rail
- Included Eyepieces: None
- Included Case: No
- Corrector: No (optional)
Other Information
- Country of Manufacture: China
| Manufacturer | Sky Watcher |
|---|---|
| Telescope Focal Length | 901 - 1000mm |
Sky-Watcher 10” Quattro 250P Imaging Newtonian Telescope