The FIGU (Fiber Injection and Guiding Unit) is mounted at the telescope focus (F/9) to inject the starlight into an optical fiber (50µm). It’s a variant of the F/6 FIGU, with an included focal reducer.
Description
The FIGU is mounted at the telescope’s focus to inject starlight into the eShel’s (or Whoppshel’s) optical fiber (50µm). A guiding camera (not included) allows you to observe the telescope field of view and locate the target star; then guide on this star. Alternatively, calibration light can be injected from the calibration module via a 200 µm optical fiber also connected to the FIGU A remote-controlled mirror allows you to switch from one source to another.
Example of guiding image field of view with the 50 µm object fiber location
Specifications
- Optimzed for F/9 telescope
- Mounted on telescope by 2″ nosepiece (50.8mm) or by T-mount female thread (M42x0.75)
- Backfocus ~45mm
- Mirror with 50µm hole (for other F-ratios, please contact us)
- Chrome-plated mirror (reflection ~55%)
- FC connector for object fiber (50µm)
- FC connector for calibration fiber (200µm)
- Input for calibration flow (remotely activated mirror)
- Fiber optics:
- 50µm object fiber, 5, 10 ou 20 mètres
- Calibration optical fiber 200µm, 10 or 20 meters
- Metal/PVC protection
- C-mount thread for the Guiding Camera ZWO ASI120mini Mono
- mirror system for injecting calibration light into the object fiber (controlled by an electromagnet)
- FIGU storage temperature -30° C to +40° C
- FIGU working temperature -25° C to +30° C
