Refractor
Refractor
SkyWatcher 80ED
| Specification | |
|---|---|
| Clear aperture: | 80.0mm (3.15") |
| Focal length: | 600 mm (23.6") |
| Resolution (visual): | 1.45 arc seconds |
| Resolution (photo): | 1.1 arc seconds |
| Coatings: | Magnesium Fluoride |
| Light Gathering Power: | about 123X that of unaided eye |
| Visual Magnitude Limit: | About 11.8 |
| Magnification range: | 11x to 165x |
| Tube assembly construction: | Painted finish, aluminum tube |
| Tube assembly length with 2/1.25 Reducer: | 19-1/2 Inches (49.5 cm) |
| OTA length with Dew Shield: | 23-1/2 Inches (59.7 cm) |
| Lens Shield Length: | Slip on, 5.25 Inches (133 mm) |
| Lens Shield OD: | 4.57 Inches (116.12 mm) |
| Front Cell OD: | 4.4 Inches (111.8 mm) |
| Lens Cover Diameter: | 4.573 Inches (116.15 mm) |
| Lens Cover Aperture Stop: | 2.07 Inches (52.5 mm) |
| Focuser type: | 2 inch Crayford |
| Focuser Travel: | 2.97 inches (75.4mm) |
| Weight of OTA: | 5.6 lbs. (2.6 kg) |
| 35mm prime-focus field: | 3.3 x 2.3 x 4 degrees @ f7.5 |
| 35mm field with Focal Reducer: | 4.1 x 2.8 x 5 degrees (vignetted) @ f5.5 |
| 35mm field with 2x Barlow: | 1.7 x 1.1 x 2 degrees @ f15 |
Refractor instalado en el Vixen R200SS
