Sky-Watcher Evoguide 50 APO Refractor
Sky-Watcher SKU: S11170 | Helix SKU: CTS11170
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:
| Optical Info | |
|---|---|
| Optical Design | ED Doublet |
| Lens Coatings | Fully Multi-Coated |
| True Aperture (mm) | 50 |
| Primary Aperture (mm) | 50 |
| F/Ratio | 4.8 |
| Focal Length (mm) | 242 |
| Observational Info | |
| Dawes Limit | 2.32 |
| Rayleigh Limit | 2.79 |
| Limiting Mag. | 11 |
| Minimum Magnification | 9 |
| Maximum Magnification | 98 |
| General Info | |
| Focuser | 1.25" Helical |
| OTA Length (Retract/Ext.) | 10.5" |
| OTA Outer Diameter | 2.2" |
| OTA Weight (with accessories) | 1.9 |
| Accessories | |
| Mounting Accessories | Guide Rings |
| Included Case | No |
| Corrector | No |
