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.
- 150 mm apochromatic refractor with matched lens assembly with one ED element
- 1200 mm focal length (f/8)
- Dual-speed 2” Crayford-type focuser
- Tube-ring attachment hardware with V-style dovetail plate
- Aluminum case
- M48 adapter
Specifications
| Optical Info | |
|---|---|
| Optical Design | ED Doublet |
| Lens Coatings | Fully Multi-Coated |
| True Aperture (mm) | 150 |
| Primary Aperture (mm) | 150 |
| F/Ratio | 8 |
| Focal Length (mm) | 1200 |
| Observational Info | |
| Dawes Limit | 0.77 |
| Rayleigh Limit | 0.93 |
| Limiting Mag. | 13.3 |
| Minimum Magnification | 21 |
| Maximum Magnification | 295 |
| Light Gathering (compared to next size down) | 71% |
| General Info | |
| Focuser | 2" Dual Speed Crayford |
| OTA Length (Retract/Ext.) | 50.5" |
| OTA Outer Diameter | 7.1" |
| OTA Weight (with accessories) | 20.5 |
| Accessories | |
| Mounting Accessories | Rings/V-Rail |
| Included Case | Yes |
| Corrector | No (optional) |
