Sky-Watcher SKU: S11190 | Helix SKU: CTS11190
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 | S11190 |
UPC | 050234111904 |
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) |