PlaneWave DRL500 Telescope System

PlaneWave DeltaRho 500 Telescope System

The DeltaRho 500 Telescope System from PlaneWave Instruments is engineered for astronomers and astrophotographers who demand both speed and large field coverage. Featuring a wide-field DeltaRho f/3 optical tube paired with the precision of the L‑500 direct‑drive mount, the DRL500 delivers superior performance for deep‑sky imaging, space domain awareness (SDA), and survey work.

Built with advanced materials and coatings, precise mount motion control, and integrated environmental safeguards, this system excels in challenging conditions and ensures high‑quality imaging with reduced setup and maintenance overhead.

Key Specifications
Aperture: 508 mm (20 in)
Focal Length: 1537 mm
Focal Ratio: f/3.03
Central Obstruction: 59% by diameter
Back Focus from Mounting Surface: 232.8 in (9.166 in) from mounting surface; 184.7 mm (7.271 in) from lens cell
Optimal Field of View: 70 mm image circle
Mount System: L‑500 direct‑drive mount
Max Payload Capacity: 200 lbs (91 kg)
Mount Weight: 257 lbs (100 kg)
Load Capacity: 200 lbs (91 kg)

Motion & Control
Encoder System: 152 mm stainless steel encoder rings on both azimuth & altitude axes; ~18,880,000 counts per revolution (~0.069 arcsec resolution)
Slew Rate: 20°/s standard; up to 50°/s maximum
Control Software: PlaneWave Interface (PWI4) with PointXP mount‑modeling; full ASCOM compatibility

Performance Metrics
Pointing Accuracy: <10 arcsec RMS with PointXP model
Tracking Accuracy: ~0.3 arcsec over a 5‑minute sidereal period
Natural Frequency: ≥10 Hz

Performance & Applications

- Wide‑Field, Fast Imaging
The f/3.03 optical design and 70 mm image circle allow for expansive, detailed imaging with shorter exposure times—ideal for astrophotography and survey work.

- Robust Design for Demanding Use
Carbon fiber optical tube and durable coatings offer thermal stability and protection. Dew control features help to maintain optical clarity during long observing sessions.

- High‑Precision Motion Control
Direct‑drive motors and high-resolution encoders ensure smooth, accurate tracking, essential for long exposures and space object monitoring.

- Versatile Payload Handling
With a 200 lb payload capability and strong mount construction, the DRL500 supports heavy imaging trains, filter wheels, large sensors, and other accessories with ease.

- Research, SDA, and Survey Ready
The combination of speed, image circle size, and accuracy makes the DRL500 a strong choice for institutions involved in space domain awareness, satellite tracking, and sky surveys.