PlaneWave CDK300 Observatory System

The PlaneWave Instruments CDK12.5 is a 12.5-inch (318 mm) f/8 Corrected Dall-Kirkham Astrograph telescope. The CDK12.5 has a dual carbon-fiber truss design, with 3 cooling fans ejecting air from the back of the telescope, and 4 fans blowing across the boundary layer of the mirror’s surface. The CDK12.5 covers a 52 mm field of view without any field curvature, off-axis coma, or astigmatism. The instrument weight is 46 lbs (20.9 kg) and comes standard with a backplate retaining ring ready to accept the focuser of your choice.

All CDK12.5 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

Enjoy exceptional optical and tracking performance for astrophotography, or research, with the CDK350 package! Includes a CDK12.5 optical tube and L-350 mount.

• CDK12.5 optical tube:
  • f/8 and 2541mm 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.
• L-350 direct drive mount:
  • Zero periodic error, zero backlash, and minimal maintenance due to the lack of gears.
  • Slew speeds up to 50 degrees/sec for satellite tracking and fast target acquisition.
  • Sidereal tracking accuracy of < 0.30 arcseconds RMS over 5 minutes.
  • High-resolution optical encoders on both axes for precision feedback.
  • Can be installed in either equatorial or alt/az configuration.
  • Includes PWI4 software (ASCOM compliant) for mount control.

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 the 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 around the world.

Technical Specifications

Mount System

Control System

Optical System

Motion Control

System Performance

In the Box

PlaneWave CDK300 Observatory System

Manuals & Warranty

Planewave Warranty (1 year for optical coatings and 2 years mechanics and electronics from the date of delivery)

Drawings and Diagrams

L-350 Pier Interface Drawing

L-350 Mount Dimensions

Instruction Manuals

PlaneWave Interface 4 Software User Manual_V15 1.7.2021

L-350 Mechanical Installation Guide