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CDK14 Optical Tube Assembly

CDK14 Optical Tube Assembly

$16,500.00

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SKU: 140101Q Category: Tags: ,

Description

The CDK14 is an innovative solution for unsurpassed astroimaging quality at an affordable price. The CDK (Corrected Dall-Kirkham) Optical Design is an innovative solution for unsurpassed astro-imaging 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.

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

Close Up of Carbon Fiber Truss and Joints on A PlaneWave CDK Telescope

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

3D Printed Baffles in a PlaneWave CDK14 Telescope

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

Polyimide Film Heater Pads Used In CDK14 Telescopes

Allows for the difference in thermal expansion between carbon fiber and aluminium. The expansion joint allows the aluminum dovetail to expand and contract without stressing the carbon fiber lower truss.

Delta-T Ready

Dovetail Expansion Joint on a PlaneWave CDK14 Telescope

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.

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 Precision Annealed Borosilicate or 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

INCLUDED ACCESSORIES

Ronchi Spacer (600341 & 600344) This spacer sits in place of a focuser and is used for setting the primary to secondary spacing. It has an 1-1/4 inner diameter and may be used with 1-1/4 oculars for collimation
Ronchi Ocular This ocular is a Ronchi screen used for setting the primary to secondary spacing
Primary Mirror Cover The Primary Mirror Cover protects the primary mirror
Planewave Thumb Drive Containing all documentation and software for collimation and spacing
12VDC Power Supply Provides power for the fans (Not included for European Orders)
Wrench Set (5812A35) English Hex Wrenches (European Orders Only)

For warranty information please check our Standard Warranty Page

Downloads

Camera Adapters Diagrams

Software

Drawings & Diagrams

Instructions

Helpful Tools

Mounting Bracket for Finderscopes Part: 125360

Finderscope and Mounting Bracket Part:200985

2 inch Mirror Diagonal Part: D1029ED

Delta T Heater Part: Delta T

EFA Kit Electronic Focuser Part: EFA

Keller EZ Saddle Part: 600182

Light Shroud CDK14/17/20/24 Part: Light_Shrouds

Piggyback Dovetail Bars Part: Piggyback_Dovetail

Hendrick Focuser Part: 200340

Counterweight Accessory for CDK14 and 20 Part: 200150

L-350 Direct Drive Mount Part: 600549

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