
PlaneWave L-550 Direct Drive Mount
Starting Price: $34,500.00
Price as Configured: $34,500.00
Price as Configured: $34,500.00
Brand: PlaneWave Instruments / SKU: PW-600552
he PlaneWave L-550 Direct Drive Mount exemplifies advanced engineering, tailored to exceed the expectations of astrophotography enthusiasts and astronomy researchers. As a robust member of our L-Series, the L-550 integrates superior technology to deliver an exceptional observational platform.
Its impressive specifications and features that distinguish the L-550:
- 300 lbs load capacity
- Direct drive motors for zero backlash, zero periodic error, and fast 50-degree-per-second slew speeds
- High-resolution encoders for precise positioning
- Enclosed electronics
- Through the mount cabling
- Alt/Az or equatorial installation orientations
- Ideal for the DeltaRho 500, CDK17, CDK20 f/6.8, CDK20 f/7.7, IRDK17, and IRDK20 optical tube assemblies
NOTE: Shipping cost will be determined after the order is made and must be paid for before the mount will ship. A shipping quote can be obtained on request.

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Mount System
Type | Alt-Azimuth / Equatorial Direct Drive Mount |
Weight | 338 lbs (153 kg) |
Max. Load Capacity | 300 lbs (136 kg) |
Latitude Range | 0 to 90 degrees, Northern and Southern hemispheres |
Cable Management | Equipment cables can be wired through mount |
Swing-Through Length (From Altitude Axis) | 650.748 mm (25.62") |
Control System
Control Electronics | PlaneWave Interface dual axis telescope control |
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 100-240 VAC 50/60HZ. Supplied with 120 VAC 15A IEC Type B Regulated Power Adapter |
Motion Control
Motor Control | Industrial grade brushless motor control system and built in electronics |
Motor – Azimuth and Altitude | Direct Drive 3 Phase Axial-Flux Torque Motors |
Encoder – Azimuth and Altitude | 152mm stainless steel encoder ring with reader built into the azimuth and altitude axes. 18,880,000 counts per revolution (0.069 arcsecond resolution). |
Motor Torque | Approximately 20 ft-lbs continuous; 50 ft-lbs peak |
Drive Electronics | Industrial grade, off-the-shelf brushless motor drives for each axis with custom designed interface card |
Telescope Control Software | Uses PWI4. Incorporates PointXP mount modeling software by Dave Rowe. All ASCOM compatible. |
System Performance
Pointing Accuracy | <10 arcsecond RMS with PointXP Model |
Pointing Precision | 2 arcseconds at sidereal velocity |
Tracking Accuracy | 0.3 arcseconds over a 5-minute period at sidereal velocity |
System Natural Frequency | 10 Hz or greater |