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Sky-Watcher Quattro 250P Imaging Newtonian Telescope - S11220
Sky-Watcher Quattro 250P Imaging Newtonian Telescope - S11220Sky-Watcher Quattro 250P Imaging Newtonian Telescope - S11220Sky-Watcher Quattro 250P Imaging Newtonian Telescope - S11220Sky-Watcher Quattro 250P Imaging Newtonian Telescope - S11220Sky-Watcher Quattro 250P Imaging Newtonian Telescope - S11220

Sky-Watcher Quattro 250P Imaging Newtonian Telescope - S11220

Item #
SW-S11220
Brand
Sky-Watcher
Price:

$815.00

Quantity:


    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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