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Sky-Watcher Startravel-80T, 80mm (3.1") f/400 Short-Tube Achromatic Refractor Optical Tube Assembly. The compact Sky-Watcher Startravel series are two-element, air-spaced, multi-coated objective, achromatic refractors, and are well proven performers for ‘Rich-Field’ views of star fields, clusters, nebulae, bright galaxies, planets, the Moon and the Sun (with correct safety filtering!), as well as giving excellent terrestrial views. These wide-field short-tube telescopes are also highly portable. They also are popular for use as guide scopes on larger telescopes. All models excel as fixed aperture lenses for both Astrophotography and terrestrial photography. Their “fast" focal ratios make them useful for capturing lunar and solar eclipses as well as nature photographs. Tube material: Aluminium.
| Optics | |
|---|---|
| Type: | Refractor |
| Type of build: | Achromatic |
| Aperture (mm): | 80 |
| Focal length (mm): | 400 |
| Focal ratio: | f/5 |
| Max. useful magnification: | 160 x |
| Light gathering capacity: | 130 x |
| Resolving capacity: | 1.44 |
| Limiting stellar magnitude (mag): | 11.3 |
| Focuser: | 1.25" Gear rack |
| General | |
| Series: | StarTravel |
| Warranty: | 2 years |
| Included accessories | |
| Barlow lens: | 2 x |
| Finderscope: | 6 x 30 |
| 1.25'' star diagonal: | 45° |
| Eyepiece: | 10 mm, 25 mm |
| Recommended for: | |
| Children: | Yes |
| Beginners: | Yes |
| Intermediate: | Not recomennded |
| Advanced: | No |
| Area of application | |
| Nature observation: | Yes |
| Moon & planets: | Yes |
| Nebula & galaxies | Yes |
| Astrophotography: | No |
| Sun: | No (only with appropriate Sun filter) |
