Product Overview
Sky-Watcher Evostar refractors provide the finest images obtainable in their design class. These doublet refractors deliver dramatic, coal-black skies and faithful, contrast-rich views of planetary and deep-space phenomenon that are second to none. Sky-Watcher Evostar refractors are the logical choice for the discriminating amateur astronomer looking for an investment in advanced instrumentation for exceptional viewing and astrophotography.
Specifications
| SKU | S11180 |
| UPC | 050234111805 |
| Optical Info | |
| Optical Design | ED Doublet |
| Lens Coatings | Fully Multi-Coated |
| True Aperture (mm) | 72 |
| Primary Aperture (mm) | 72 |
| F/Ratio | 5.9 |
| Focal Length (mm) | 420 |
| Observational Info | |
| Dawes Limit | 1.61 |
| Rayleigh Limit | 1.94 |
| Limiting Mag. | 11.7 |
| Minimum Magnification | 10 |
| Maximum Magnification | 142 |
| General Info | |
| Focuser | 2" Dual Speed Crayford |
| OTA Length (Retract/Ext.) | 16.5" |
| OTA Outer Diameter | 3.5" |
| OTA Weight (with accessories) | 4.3 |
| Accessories | |
| Mounting Accessories | Rings/V-Rail |
| Included Case | Yes |
| Corrector | No (optional) |
