Descripción
Características técnicas:
- Optical design: Reflector
- Optical diameter: 457.2mm
- Focal length : ~2058mm (f/4.5)
- Eyepiece height at zenith: ~1730mm, 68 in(f/4) or ~1930mm, 76 in (f/4.5)
- 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 : 90 mm
- Secondary mirror obstruction by diameter : 19.7% (f/4), 17.2% (f/4.5)
- Secondary mirror obstruction by area : 3.9% (f/4), 3.0% (f/4.5)
- 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.
- Length of optical tube: ~72 in (f/4), ~79 in (f/4.5)
- Weight, optical tube: 62.0 lbs
- Weight, fully assembled: 72.0 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
Valoraciones
No hay valoraciones aún.