PlaneWave CDK12.5 Telescope
Starting Price: $13,000.00
Price as Configured: $13,000.00
Price as Configured: $13,000.00
Brand: PlaneWave Instruments / SKU: PW-125104Q
The CDK12.5 now includes the EFA for automated focus and temperature – a $920 value!
The CDK12.5 from PlaneWave Instruments represents a fusion of precise engineering and innovative design tailored for the avid astrophotographer and the discerning astronomer. With its advanced technology and refined design, the CDK12.5 delivers exceptional image quality for a range of observational and scientific applications.
The CDK12.5 stands out with its notable specifications and features:
- 12.5-inch (318 mm) aperture
- 2541 mm focal length
- f/8 focal ratio
- 265 mm back focus from mounting surface
- Perfectly flat field across the entire 52 mm image circle
- No off-axis coma or astigmatism
- Rock-solid fused silica mirrors with low thermal expansion
- Lightweight and rigid carbon fiber optical tube assembly
- EFA box included for automated focusing and to monitor temperature and control fans via PWI4 Software (Hand control not included).
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.

Need help deciding?
Tell us what you're looking for, and we’ll point you in the right direction. Email Us.
Tell us what you're looking for, and we’ll point you in the right direction. Email Us.
Optical System
Aperture | 12.5 inch (318 mm) |
Focal Length | 2541 mm (100.04 inch) |
Focal ratio | f/8 |
Central Obstruction | 42% of the primary mirror diameter |
Back Focus from Mounting Surface | 10.445 inch (265 mm) |
Back Focus from Racked in Focuser | 7.2 inch (183 mm) |
OTA Length | 31 inch (787 mm) |
Optical Tube | Carbon fiber |
Dimensions | See Downloads for drawing |
Weight (includes manual-focuser and dovetail) | 46 lbs (20.9 kg) |
Weight (includes electronic-focuser and dovetail) | 48.5 lbs (22.0 kg) |
Optimal Field of View | 52mm image circle |
Secondary Mirror
Diameter | 4.65 inch (118 mm) |
Material | Fused silica (quartz) |
Shape | Spherical |
Coating | Enhanced aluminum – 96% |
Primary Mirror
Optical Diameter | 12.5 inch (318 mm) |
Outer Diameter | 13 inch (330 mm) |
Shape | Prolate ellipsoid |
Material | Fused silica (quartz) |
Coating | Enhanced aluminum – 96% |
Lens Group
Diameter | 70 mm (2.76 inch) |
Number of lenses | 2 |
Coating | Broadband AR coatings (less than .5% reflected from 400 to 700nm) |