Sky-Watcher’s Evostar apochromatic doublet refractors are the perfect blend of superior extra-low dispersion glass and affordability. The Evostar refractor lens assembly utilizes a proprietary combination of matched lenses, delivering tack-sharp stars with charcoal-black, contrast-rich skies.
All ED glass elements are fluorite-based and feature our proprietary Metallic High-Transmission Coatings™ (MHTC™), virtually eliminating all false color while the internal baffle helps prevent stray light from affecting your photography. Like the optics, the tube is beautifully crafted using aluminum and finished with a black diamond metal-flake finish.
The Advantage of a Doublet: Using a doublet refractor instead of a triplet has some advantages: less glass means less weight, which translates to a more portable and affordable telescope. This allows you to dedicate more of your budget to your camera or laptop while benefiting from a lightweight, high-performance astrophotography rig.
The Evostar 72ED comes in a foam-lined aluminum case complete with tube rings and a V-style dovetail plate.
| General Identification | |
|---|---|
| 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 |
| Physical & Focuser Info | |
| Focuser | 2" Dual Speed Crayford |
| OTA Length (Retract/Ext.) | 16.5" |
| OTA Outer Diameter | 3.5" |
| OTA Weight (with accessories) | 4.3 lbs |
| Accessories | |
| Mounting Accessories | Rings / V-Rail (Dovetail) |
| Included Case | Yes (Aluminum) |
| Corrector | No (Optional) |
| Brand | SkyWatcher |