Planewave CDK20 Optical Tube Assembly

The CDK20 is an innovative telescope for unsurpassed astroimaging, research, or satellite tracking.

• f/6.8 and 3454mm focal length.
• 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.

Capturing the most stunning astrophotographs possible is something our team is passionate about. From design to manufacture, our 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 52 x 52 arcminute field of view when using large 16803 size camera sensors. When equipment fades into the background and simply performs, the astrophotography experience becomes even more fun and rewarding!