PlaneWave IRF90 - Integrated Rotating Focuser

PlaneWave IRF90 – Integrated Focuser & Rotator System

The IRF90 from PlaneWave Instruments is a high-capacity integrated focuser and rotator, engineered for precision and stability in both Alt/Az and equatorially mounted telescope systems. Designed to support heavy imaging payloads while maintaining exacting focus and rotational control, the IRF90 is ideal for advanced astrophotography and research-grade observatories.

Key Specifications

Back Focus Occupied: 3.5″ (fully racked in), 4.7″ (fully racked out)
Focus Travel: 30mm (30,000 microns / 1.2″)
Focus Capacity: Supports up to 40 lbs (18 kg)
Rotator Aperture: 90mm
Rotator Travel Range: 365° with mechanical hard stops
Control Interface: PWI4 Software
Mount Compatibility: Alt/Az and equatorial systems

Performance & Applications

- Integrated design eliminates need for separate focuser and rotator components
- Capable of lifting large imaging trains with absolute stability
- 365° rotator range with hard stops prevents cord wrap in continuous tracking or imaging operations
- Precision autofocusing and field de-rotation (when used with Alt/Az mounts) via PWI4 software
- Ideal for deep-sky astrophotography, spectrographs, and adaptive optics setups