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Sky-Watcher Quattro 250P Imaging Newtonian Telescope - S11220

Item #:
SW-S11220
Brand:
Sky-Watcher
$815.00
Qty

Discontinued

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Sky-Watcher Quattro 250P Imaging Newtonian Telescope - S11220

Sky-Watcher Quattro 250P Imaging Newtonian Telescope - S11220

$815.00

Discontinued


S11220 Quattro 250P Imaging Newtonian Telescope by Sky-Watcher

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)

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