*NEW* 14 inch CDK Optical Tube Assembly

Part#: 140101

Price: $15,000.00

**Special Introductory Price  


The PlaneWave Instruments CDK14 is a 14 inch (0.36 m) f/7.2 Corrected Dall-Kirkham Astrograph telescope. The CDK14 covers a 70 mm field of view without any field curvature, off-axis coma, or astigmatism. The CDK14 is a lightweight carbon-fiber truss design weighing less than 50lbs, with 3 cooling fans blowing air throughout the back of the telescope. The CDK optical design is the innovative solution for unsurpassed astro-imaging quality at an affordable price.

 

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.

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 CD

K 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 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. 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.  

CDK14 / Paramount MX Package  -  $28,020

CDK14” 140101 $15,000  
Paramount MX Mount 600102 $8,995
Paramount MX Tripod 600202 $2,000
Counter weight 18lbs 600112 $225
Focuser, 3.5” 200340 $1,000
EFA Focuser/Fan Control 200901 $800
TOTAL   $28,020

 

CDK14 / AP 1100GTO Package  $28,670

CDK14” 140101 $15,000  
1100GTO Mount AP1100GTO $8,800
ATS Portable Pier ATS8X48 $2,095
Flat pier plate for 1100GTO 119FSA-FP $265
CounterWeight, 24lbs (x2) 24SCWT $520
CounterWeight, 18lbs 18SCWT $190
Focuser, 3.5” 200340 $1,000
EFA Focuser/Fan Control 200901 $800
TOTAL   $28,670

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

PRIMARY MIRROR

Diameter 14.1 inch (358 mm)
Aperture 14 inch (355.6 mm)
Focal ratio F/3.26
Mounting Laser Collimated and Permanently Fixed
Material Precision Annealed Borosilicate
Shape Prolate Ellipsoid
Coating Enhanced Aluminum - 96%

SECONDARY MIRROR

Diameter 165 mm (6.5 inch)
Material Precision Annealed Borosilicate
Shape Spherical
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)
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