Descripción
Características técnicas:
- Optical design: Reflector
- Optical diameter: 406.4mm
- Focal length: 2032mm (f/5)
- Focal ratio: f/5
- Eyepiece height at zenith: 1690mm / 66.5″ (f/4.5), 1890mm / 74.5″ (f/5)
- Optics type: Parabolic
- Eyepieces: Not included
- Optical quality: Diffraction limited++ (Strehl 0.95+ for the primary mirror, 1/10 lambda or better in PV for the secondary mirror)
- Finder scope: Not included
- Focuser: 2″ dual-speed linear bearing Crayford
- Secondary mirror obstruction: 80 mm (f/4.5), 70mm (f/5)
- Secondary mirror obstruction by diameter: 19.7% (f/4.5), 17.3% (f/5)
- Secondary mirror obstruction by area: 3.9% (f/4.5), 3.0% (f/5)
- Mirror coatings/over-coatings: 96% Enhanced coating on both of the primary and secondary mirrors
- Tube material: 6063-T6 Aluminum Alloy tubes with black zinc plated steel knob screws; Aluminum Alloy main structure (OTA and mount) and structure steel mirror cell.
- Weight, optical tube: 52.0 lbs
- Weight, fully assembled: 60.0 lbs.
- Additional, optional accessories: 8×50 Finder, Shroud, Wheelbarrow, Vinyl foam Cushioned Grips
- Other features: Sling lateral support and deluxe push-pull brass knob collimation screws
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