Descripción
Optical Tube Info: | |
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Optical Design: | Rowe-Ackermann Schmidt Astrograph |
Aperture: | 355.6mm (14″) |
Focal Length: | 790mm (31.1″) |
Focal Ratio: | f/2.2 |
Central obstruction diameter: | 158mm (6.22″)(44% of aperture diameter) |
Light Gathering Power (Compared to human eye): | 2581X |
Resolution (Rayleigh): | 0.39 arc seconds |
Resolution (Dawes): | 0.36 arc seconds |
Image circle: | 60.1mm (2.36″) Ø, 4.4° |
Useable field: | 70mm (2.75″) Ø, 5.1°, only minimal performance loss at edge of FOV |
Wavelength range: | 400 – 900 nm |
Spot size: | < 6.3 μm RMS across FOV |
Optical coatings: | Enhanced aluminum, XLT multi-coatings used throughout |
Off-axis Illumination: | 83% at 30mm (1.18″) off-axis |
Optical window: | 104mm (4.09″) Ø |
Back focus with included camera adapter: | 55mm (2.16″) |
Back focus from top of threaded collar: | 77.5mm (3.05″) |
Optical Tube: | Aluminum |
Optical Tube Length: | 1079.5mm (42.5″) |
Optical Tube Diameter: | 406.4mm (16″) |
Focuser: | New focuser design, minimizes focus shift |
Finderscope: | Not included |
Optical Tube Weight: | 75 lbs (34.02 kg) |
Other features: | Ventilation fan, dual dovetail mounting bars |
Included items: | 48mm (1.89″) camera adapter, fan battery pack |
Solar Warning |
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