PlaneWave CDK17 Telescope
Starting Price: $22,500.00
Price as Configured: $22,500.00
Price as Configured: $22,500.00
Brand: PlaneWave Instruments / SKU: PW-170101Q
PlaneWave manufactures your telescope of choice for unsurpassed astroimaging, research, or satellite tracking. Here are the basics of the PlaneWave CDK17:
- f/6.8 and 2939mm focal length.
- No coma, no off-axis astigmatism, and no field curvature.
- Pinpoint stars across a 70mm 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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Optical System
| Optical Design | Corrected Dall-Kirkham |
| Aperture | 17 inch (432 mm) |
| Focal Length | 2939 mm (115.71 inch) |
| Focal ratio | F/6.8 |
| Central Obstruction | 23.7% by surface area; 48.6% of the primary mirror diameter |
| Back Focus from Mounting Surface | 10.32 inch (262.33 mm) |
| Back Focus from Racked in Focuser | 7.24 inch (184 mm) |
| Weight | 106 lbs (48 kg) |
| OTA Length | 42 inch (1067 mm) |
| Optical Performance | 6.5 micron rms at 21mm and 9.6 micron at 26mm off-axis |
| Upper Cage | Carbon fiber truss |
| Lower Cage | Carbon fiber truss with carbon fiber light shroud |
| Optimal Field of View | 70mm image circle |
Secondary Mirror
| Diameter | 190 mm (7.48 inch) |
| Material | Fused silica (quartz) |
| Shape | Spherical |
| Coating | Enhanced aluminum – 96% |
Primary Mirror
| Optical Diameter | 17 inch (432 mm) |
| Outer Diameter | 17.5 inch (445 mm) |
| Shape | Prolate ellipsoid |
| Material | Fused silica (quartz) |
| Coating | Enhanced aluminum – 96% |
Lens Group
| Diameter | 105 mm (4.13 inch) |
| Number of lenses | 2 |
| Coating | Broadband AR Coatings (less than .5% reflected from 400 to 700nm) |
Standard Features
| 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 ejecting air from the back of the telescope and four fans blowing across the boundary layer of the mirror surface. 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. |
Shipping
| Crated Shipping Weight | 225 lbs (102.1 kg) |
| Crate Width | 30 inch (762 mm) |
| Crate Height | 37 inch (940 mm) |
| Crate Length | 58 inch (1,473 mm) |
Included Accessories
| Primary Mirror Cover | To protect the primary mirror |
| PlaneWave Thumb Drive | Contains software and instructions for collimation and spacing the primary to secondary mirror |
| 12VDC Power Supply | Provides power for the fans |
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