The PlaneWave L-Series Direct Drive Mount system is offered in Alt-Az or Equatorial configurations. The L-Series comes in two models: The L-500 is designed for the CDK17/20 and can hold payloads of over 200 lb.; The L-600 is ideal for the CDK24 and can hold up to 300 lb. Both mounts are designed with zero backlash and zero periodic error, virtually silent motion and slew speeds of up to 50 degrees per second!
The L-Series combines versatility, simplicity and affordability by combining all the technology of the PlaneWave 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!
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.
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.
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.
The mount slides for precise center of gravity balance whether in Alt-Az or Equatorial configuration.
Access panels in the fork arm and azimuth axis allow for camera equipment cabling through the inside of the mount.
|CDK-400 (CDK17 / L-500)||$38,000|
|IRF90 Rotating Focuser||4,500|
|EFA Focuser Accessory||1,000|
|CDK-500 (CDK20 / L-500)||$47,500|
|IRF90 Rotating Focuser||4,500|
|EFA Focuser Accessory||800|
Type: Alt-Azimuth / Equatorial Direct Drive Mount
Weight: 257 lb. (100 kg)
Component Weights: Azimuth Base: 121 lb. (55 kg), Fork Arm: 136 lb. (62 kg)
Max. Load Capacity: 200 lb. (91 kg)
Latitude Range: 0 to 90 degrees, Northern and Southern hemispheres
Cable Management: Equipment cables can be wired through mount
Pointing Accuracy: <10 arcsecond RMS with PointXP Model
Pointing Precision: 2 arcsecond
Tracking Accuracy: <0.3 arcsecond error over 5 minute period
System Natural Frequency: 10 Hz or greater
Control Electronics: PlaneWave Interface dual axis telescope control
User Interface: PlaneWave Interface 4 (PWI4) Control Software with integrated PointXP mount modeling software
Homing Sensors: Home position sensors are included allowing the mount can find its home position on power up.
Slew Rate: 20 degrees per second (standard); 50 degrees per second (maximum), both axes
Power Requirement: Accepts 120 VAC. Supplied with 12VDC 15A Regulated Power Adapter
Motor Control: Industrial grade brushless motor control system and built in electronics
Motor - Azimuth & Altitude: Direct Drive 3 Phase Axial-Flux Torque Motors
Encoder - Azimuth & Altitude: 152mm disk built into the azimuth and altitude axes with stainless steel encoder on the circumference with reader yields 18,880,000 counts per revolution of the telescope. This translates to about 0.069 arcsecond resolution
Motor Torque: Approximately 20 ft-lb. continuous; 50 ft-lb. peak
Drive Electronics: Industrial grade, off-the-shelf brushless motor drives for each axis with custom designed interface card
Telescope Control Software: PlaneWave Interface (PWI4). Incorporates PointXP mount modeling software by Dave Rowe All ASCOM compatible.