PlaneWave CDK20 Telescope

Starting Price: $34,000.00
Price as Configured: $34,000.00
Brand: PlaneWave Instruments / SKU: PW-200104Q
PlaneWave manufactures your telescope of choice for unsurpassed astroimaging, research, or satellite tracking. Here are the basics of the PlaneWave CDK20:
  • f/6.8 and 3454mm focal length.
  • Also available with f/7.77 and 3951 mm focal length. There is an additional 1.79" of backfocus and 497 mm of focal length compared to the standard CDK20 f/6.8 model.
  • No coma, no off-axis astigmatism, and no field curvature.
  • Pinpoint stars across a 52mm image circle.
  • Rock solid fused silica mirrors with low thermal expansion.
  • Carbon fiber optical tube assembly for rigidity and fast cooling.
  • Simple secondary mirror collimation thanks to the fixed primary mirror.

NOTE: Shipping cost will be determined after the order is made and must be paid before the telescope will ship. A shipping quote can be obtained on request.
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PW-200150 - PlaneWave Counterweight Accessory for CDK14 & 20
PW-200150 - PlaneWave Counterweight Accessory for CDK14 & 20
$230.00
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PW-200150 - PlaneWave Counterweight Accessory for CDK14 & 20
About This Product
Counterweights and bracket for CDK14 and CDK20 (front ring only). Comes with three 0.5lb stackable weights (PW-125382).

PW-2002010 - PlaneWave CDK20 F/7.77 CorRECtoR Lens Assembly
PW-2002010 - PlaneWave CDK20 F/7.77 CorRECtoR Lens Assembly
$1,400.00
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PW-2002010 - PlaneWave CDK20 F/7.77 CorRECtoR Lens Assembly
About This Product

This is lens group is designed to convert a CDK20 f/6.8 to f/7.77. The original lens group is unscrewed from the backplate of the optical tube and replaced with the new lens group.

  • Adds 1.9″ of backfocus to the optical tube for those requiring additional imaging train components.
  • Increases focal length to 3951mm, which is an additional 497 mm of focal length compared to the standard CDK20 f/6.8.
PW-200204 - PlaneWave CDK20 F/6.8 CorRECtoR Lens Assembly
PW-200204 - PlaneWave CDK20 F/6.8 CorRECtoR Lens Assembly
$1,400.00
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PW-200204 - PlaneWave CDK20 F/6.8 CorRECtoR Lens Assembly
About This Product
CDK20 F/6.8 CORRECTOR Lens Assembly, FOR CHANGING F/7.77 CDK20 TO WIDER-FIELD F/6.8 SYSTEM
PW-200166 - PlaneWave Reducer 0.66X CDK20/24
PW-200166 - PlaneWave Reducer 0.66X CDK20/24
$1,400.00
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PW-200166 - PlaneWave Reducer 0.66X CDK20/24
About This Product

This is a reducer designed specifically for flat field telescopes like the CDK. This reduces the f ratio of the CDK telescope 66%. The f/6.8  CDK20 telescopes will be reduced to about f/4.5.

**NOTE – 200166 adapter is also compatible with CDK17 that have 8.81″ back focus.   CDK17 with 10.24″ back focus will use the 125166 focal reducer. See instruction manual for details.

PW-200915 - PlaneWave Ronchi Eyepiece and Adapter Kit for CDK20 + CDK24
PW-200915 - PlaneWave Ronchi Eyepiece and Adapter Kit for CDK20 + CDK24
$400.00
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PW-200915 - PlaneWave Ronchi Eyepiece and Adapter Kit for CDK20 + CDK24
About This Product
RONCHI EYEPIECE and ADAPTER KIT FOR CDK20 + CDK24 (CDK24 REQUIRES 240343-1 FOR PROPER USE AT 8.81" BACKFOCUS) INCLUDES: CDK BACKPLATE ADAPTER, RONCHI EYEPIECE, and RONCHI EYEPIECE SPACERS (CDK20/CDK24 SPECIFIC SPACER + CDK14-CDK24 STandARD SPACER)
PW-200970-KIT - PlaneWave CDK20 Spandex Shroud and Spacer SET
PW-200970-KIT - PlaneWave CDK20 Spandex Shroud and Spacer SET
$650.00
PW-200970 - PlaneWave CDK20 Upper Cage Light Shroud
PW-200970 - PlaneWave CDK20 Upper Cage Light Shroud
$150.00
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PW-200970 - PlaneWave CDK20 Upper Cage Light Shroud
About This Product
This is a spandex fabric light shroud that blocks out stray light and minimizes dust on the primary mirror.
PW-2003136 - PlaneWave Solid Aluminum Shroud CDK20 (Factory Installation Required)
PW-2003136 - PlaneWave Solid Aluminum Shroud CDK20 (Factory Installation Required)
$800.00
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PW-2003136 - PlaneWave Solid Aluminum Shroud CDK20 (Factory Installation Required)
About This Product
NOTE: Shipping cost will be determined after the order is made and must be paid for before the item will ship. A shipping quote can be obtained on request.
PW-2002101 - PlaneWave Sliding Counterweight System Rail & Brackets for CDK20
PW-2002101 - PlaneWave Sliding Counterweight System Rail & Brackets for CDK20
$600.00
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PW-2002101 - PlaneWave Sliding Counterweight System Rail & Brackets for CDK20
About This Product
Requires sliding weight system counterweights, not included.
PW-200398 - PlaneWave Counterweight Bracket for CDK14 (Front-Ring Only) & CDK20
PW-200398 - PlaneWave Counterweight Bracket for CDK14 (Front-Ring Only) & CDK20
$70.00
PW-600166 - PlaneWave Reducer, Lens .66x for IRF90 & CDK20/24
PW-600166 - PlaneWave Reducer, Lens .66x for IRF90 & CDK20/24
$1,400.00
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Price as Configured: $34,000.00

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Capturing the most stunning astrophotographs possible is what the PlaneWave team is passionate about. From design to manufacture, the goal with the Corrected Dall-Kirkham (CDK) 20″ telescope was centered around performance and ease of use. The CDK20 is an incredible breakthrough in telescope technology and produces no off-axis coma and no off-axis astigmatism. Additionally, the CDK20 provides a perfectly flat field so your astrophotographs will have stunning clarity from corner to corner of the image without field curvature degrading the photos. Offering the simplicity of single-mirror collimation, the stray light control of advanced baffles, structural performance created through finite element analysis (FEA), and decades of telescope design experience, the CDK20 is an exceptional diffraction-limited telescope. CDK20 users can experience pinpoint stars edge-to-edge and a 45 x 45 arcminute field of view when using large 16803 size camera sensors.

Carbon Fiber Truss Design

Minimizes thermal expansion which causes focus shift as temperature changes during an imaging session. Carbon fiber also reaches ambient temperatures quickly and is extremely lightweight and rigid to help ensure excellent imaging data is produced.


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. Quality baffling makes an incredible difference in overall image quality, so PlaneWave ensured an optimal design was created for their telescopes.

Dovetail Expansion Joint

Allows for the difference in thermal expansion between carbon fiber and aluminum. The expansion joint allows the aluminum dovetail to expand and contract without stressing the carbon fiber lower truss. This results in images that are not distorted due to expansion, or contraction of the optical tube materials.


Delta-T Ready

For added dew prevention, the CDK14 is internally wired with polyimide film heater pads and temperature sensor, which is ready to be controlled with the Delta-T via PlaneWave Interface 3 software.


Cooling Fans

Three fans on the backplate of the optical tube pull air through the telescope and by the primary mirror. These fans help the telescope reach thermal equilibrium quickly, further reducing any distortion in images due to temperature variations. The fans are controlled by a switch on the optical tube, or can be controlled by via PWI3 software if a PlaneWave Electronic Focus Accessory (EFA Kit) is purchased.