PlaneWave CDK 14″ Fused Silica

$34,999.00

AUD Price shown includes GST
GST is removed at checkout for NZ

SKU: 140101Q
Conditionnew
F-Number7.2
Focallength2563

 



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    PlaneWave CDK 14″ Fused Silica

    PlaneWave CDK 14″ Fused Silica

    Aperture: 356mm

    Focal Length:2563mm

    Focal Ratio: 7.2

    Image Circle: 70mm

    Weight: 22kg

    PlaneWave CDK 14″ Fused Silica

    The CDK (Corrected Dall-Kirkham) Optical Design is an innovative solution for unsurpassed astroimaging quality at an affordable price. The CDK telescope design provides excellent imaging with large format CCD cameras while remaining superb for visual use. The CDK design far exceeds the off-axis performance of most commercial telescope designs including the Ritchey-Chrétien design.

    FUSED SILICA

    Fused Silica is a synthetic amorphous silica glass of the highest purity and one of the most transparent glasses made.

    The optical and thermal properties of fused silica are superior to other types of glass due to its purity. Its transmission and homogeneity exceed those of crystalline quartz without the problems of temperature instability inherent in the crystalline form.

    Fused Silica has a coefficient of thermal six times lower than Borosilicate glass, which means that as fused silica cools down, it preserves its shape to a high degree of accuracy. This translates into consistent optical performance and unchanging focus over temperature changes.

    With high melting temperature (~1,600 degrees Celsius), a very low coefficient of thermal expansion and resistance to thermal shock, fused silica is the material of choice for professional observatories as well as various scientific applications.

    This no-compromise design is unique in making the optical alignment forgiving and collimation very easy. This guarantees the user the best possible performance from the telescope. The end result at the image plane of the CDK design is no off-axis coma, no off-axis astigmatism, perfectly flat field (no off-axis defocus). The CDK design will give you pinpoint stars from the center to the corner of the field of view.

    More about our Optical Design

    Features:
     

    Carbon Fiber Truss Design

    Open truss tube design with carbon fiber frame minimizes thermal expansion which causes focus shift with changes in temperature. Carbon fiber truss design also promotes quick thermal cooling and provides a rigid, lightweight structure.
    3D Printed Baffles Planewave uses digital 3D printing technology to produce lightweight baffle tubes. 3D printers add successive layers of material to construct a baffle system with precision positioned internal stray light baffles to minimize vignetting and maximize image contrast.
    Dovetail Expansion Joint Allows for the difference in thermal expansion between carbon fiber and aluminum. The expansion joint allows the aluminium dovetail expand and contract without stressing the carbon fiber lower truss.
    Cooling Fans Three cooling fans blow air inside the back of the telescope. Internal diverting fins circulate air flow behind the mirror for even cooling to help the telescope reach thermal equilibrium quickly. The fans are controlled with PWI PC software with the optional Electronic Focus Accessory (EFA Kit).
    Delta-T Ready For added dew prevention, the CDK14 is internally wired with polyimide film heater pads and temperature sensor, ready to be controlled with the optional Delta-T controller.
    PlaneWave CDK 14″ Fused Silica Specifications

    OPTICAL SYSTEM

    Optical Design Corrected Dall-Kirkham (CDK)
    Aperture 14 inch (356mm)
    Focal Length 2563mm (101 inch)
    Focal ratio F/7.2
    Central Obstruction 23.5% by surface area; 48.5% by diameter
    Back Focus from Mounting Surface 11.09 inch (282 mm)
    Weight 48 lbs (22 kg)
    OTA Length 35 inch (889 mm)
    Optical Performance 3.1 micron RMS at 13mm off-axis; 6.0 micron RMS at 35mm off-axis – Spot Diagram
    Upper Cage Carbon Fiber Truss
    Lower Cage Carbon Fiber Truss and Light Shroud
    Optimal Field of View 70mm Image Circle

    SECONDARY MIRROR

    Diameter 165 mm (6.5 inch)
    Material Precision Annealed Borosilicate
    Shape Spherical
    Coating Enhanced Aluminum – 96%

    PRIMARY MIRROR

    Optical Diameter 14 inches (355.6)
    Outer Diameter 14.5 inches (468.3mm)
    Shape Prolate Ellipsoid
    Material Fused Silica
    Coating Enhanced Aluminum – 96%

    LENS GROUP

    Diameter 95mm (3.7 inch)
    Number of lenses Two
    Coating broadband AR Coatings (less than .5% reflected from 400 to 700nm)

    STANDARD FEATURES

    CDK Optics The Corrected Dall-Kirkham design yields a perfectly flat field free from off-axis astigmatism, coma and defocus.
    Carbon Fiber Truss Design Minimizes thermal expansion which causes focus shift with changes in temperature
    Dovetail Expansion Joint Allows for the difference in thermal expansion between carbon fiber and aluminum. The expansion joint allows the aluminum dovetail expand and contract without stressing the carbon fiber lower truss
    Cooling Fans Three cooling fans blow air inside the back of the telescope. This helps the telescope to reach thermal equilibrium quickly. The fans are controlled by a computer if the optional Electronic Focus Accessory (EFA Kit) is purchased.
    Delta-T Ready For added dew prevention, the CDK14 is internally wired with polyimide film heater pads and temperature sensor, ready to be controlled with the optional Delta-T controller.

    SHIPPING

    Crated Shipping Weight  225 lbs
    Crate Width  31 inches
    Crate Height  26 inches
    Crate Length  53 inches

    NOTE: This product has a lengthy lead time. Please contact education@bintel.com.au for further information.

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