Esprit 80 ED APO Refractor
Esprit 80 ED APO Refractor
Sky-Watcher Esprit 80mm ED Triplet APO Refractor Telescope
Overview:
Designed with the discerning astrophotographer in mind, Sky-Watcher USA's top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.
With their three-element air spaced objective lens design, false color is completely eliminated, yielding exceptional contrast and sharpness. The included 2-element field corrector guarantees a flat field across the entire imaging plane. The Sky-Watcher exclusive Helinear Track focusing system provides a smooth, rock-solid focuser with zero image shift.
All Sky-Watcher USA Esprit refractors come with a 8 x 50 right angle finderscope, 2-inch Star diagonal, 2-element field flattener*, camera adapter, D-style dovetail and padded case. Everything you need to get out under the stars.
r| Optical Info | |
| Optical Design: | ED Triplet Refractor |
| Lens Coatings: | Fully Multi-Coated |
| Glass Type: | BK7 (2)/FPL-53(ED) |
| Primary Aperture (mm): | 80 |
| F/Ratio: | 5 |
| Focal Length (mm): | 400 |
| Observational Info | |
| Dawes Limit: | 1.45 |
| Rayleigh Limit: | 1.75 |
| Limiting Mag.: | 12 |
| Minimum Magnification: | 11x |
| Maximum Magnification: | 157x |
| General Info | |
| Focuser: | 2.7" Dual Speed R&P |
| OTA Length (Retract/Ext.): | 17.4" |
| OTA Outer Diameter: | 4.875" |
| OTA Weight (with accessories): | 8.8 |
| Accessories | |
| Included Finder: | 8x50 RACI |
| Included Diagonal: | 2" Dielectric |
| Mounting Accessories | V-Rail Foot |
| Included Eyepieces: | None |
| Included Case: | Yes |
| Corrector: | Yes |
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