Descripción
Especificaciones técnicas:
- Optical design: Reflector
- Optical diameter:508mm
- Focal length : ~1880mm (f/3.7)
- Eyepiece height at zenith: 1745mm (~69 in, f/3.7)
- 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: 100 mm (f/3.7), 90mm (f/4.2)
- Secondary mirror obstruction by diameter: 19.7% (f/3.7), 17.7 (f/4.2)
- Secondary mirror obstruction by area: 3.9% (f/3.7), 3.1% (f/4.2)
- 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 : 73 in (f/3.7), 83 in (f/4.2)
- Weight, optical tube : 76 lbs (f/3.7), 77 lbs (f/4.2)
- Weight, fully assembled : ~88 lbs. (f/3.7), ~89 lbs (f/4.2)
- 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
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