The PlaneWave Instruments CDK20 is a 20 inch (0.51 m) f/6.8 Corrected Dall-Kirkham Astrograph telescope. The CDK20 has a dual carbon-fiber truss design, with 3 cooling fans ejecting air from the back of the telescope. The CDK20 covers a 52 mm field of view without any field curvature, off-axis coma, or astigmatism. The instrument weight is 140 lbs (64 kg) and comes standard with a back plate retaining ring ready to accept the focuser of your choice.

All CDK20 telescopes come with fused silica primary and secondary mirrors. 

The L-Series combines versatility, simplicity and affordability by combining all the technology of our Observatory class telescopes into a compact stand-alone mount.  In its Alt/Az configuration it is considerably more compact than its equatorial counterpart, allowing a larger telescope to fit in a smaller enclosure. The mass it takes to make a rigid alt/az mount is substantially less, leading to cost savings. Unlike German Equatorial mounts, there are no meridian flips to deal with, and no  large protruding counterweights to create a dangerous hazard in a public observatory. Alt/Az is more intuitive to use and no polar alignment is needed. Besides, it is the way the pros do it!

L-Series Mount Features:

• Direct-drive motors on each axis for smooth, fast, and virtually silent movement of the telescope
• Slew speeds up to 50 degrees per second
• High resolution encoders on each axis for precise positioning
• Zero backlash
• Zero periodic error
• PointXP mount modeling software
• Enclosed electronics
• Through the mount cabling

Direct drive motors and encoders	Direct Drive motors and on-axis encoders eliminate the need for  gears, thereby eliminating backlash and periodic error. With high-resolution encoders providing the feedback for the direct drive motors, not only will the telescope track without periodic error and backlash, the mount will also counter wind gusts with precise servo feedback.
Incredible Slew Speed	The direct drive motors can move the telescope at speeds up to 50 degrees per second for tracking satellites or just to minimize target acquisition time.
Dual mounting bracket	PlaneWave style mounting bracket to hold CDK17/20 onto inside of fork arm with additional option of mounting a scope on the outside of the fork arm. Optional dovetail clamp required.
Azimuth dovetail balance system	For precise center of gravity balance whether in Alt-Az or Equatorial configuration
Through the mount cabling	Access panels in the fork arm and azimuth axis allow for camera equipment cabling through the inside of the mount.
Proven CDK700/PW1000 Technology	The L-Series uses the same proven technology as the CDK700 and 1-Meter PW1000 which are being used in Universities round the world.

Technical Specifications

Mount System

Control System

Optical System

Motion Control

System Performance

Additional Accessories

In the Box

Manuals & Warranty

Planewave Warranty (one year for optical coatings and two years mechanics and electronics from the date of delivery)

Drawings & Diagrams

L-500 Pier Interface Drawing

L-500 Mount Dimensions

Instruction Manuals

L500/600 Mount Instructions

PlaneWave Interface 4 Software User Manual_V15 1.7.2021