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URL: http://www.thaiexcite.com/Sky-Watcher-Esprit-80ED-Triplet-Super-Apo-Refractor-with-Flattener-included-.html
กล้องถ่ายดาว Sky-Watcher Esprit 80ED Triplet Super Apo Refractor (รวม Flattener)
รายละเอียด
รายละเอียด
กล้องถ่ายดาว Sky-Watcher Esprit 80ED Triplet Super Apo Refractor (รวม Flattener)
- ทดสอบและรีวิวโดยนิตสารชื่อดัง Astronomy Technology Today magazine. ดู Test Report บับเต็มได้ที่นี่
- Triplet super-apochromatic design
- Three-element, air-spaced optical assembly virtually eliminates false color
- 80mm aperture, 400mm focal length, f/5 focal ratio
- 2.7-inch dual-speed rack-and-pinion, Helinear track focuser
- Rolled steel optical tube with white, glossy finish
- Included accessories: field flattener, V-style mounting foot, 8x50 right-angle finderscope, M48 camera adapter, 2-inch dielectric diagonal, and padded hard case
"..Among the Best Apo Values on the Market Today.." - Astronomy Technology Today Test Report
Click on image to view report
Designed with the discerning astrophotographer in mind, Sky-Watcher’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more. With the Esprit’s three-element, air spaced objective lens design, false color is virtually eliminated, yielding exceptional contrast and sharpness. Each element is fully multi-coated with Sky-Watcher’s proprietary Metallic High-Transmission Coatings™ (MHTC)™, producing a transmission rate that rivals any refractor on the market.
In addition to superb optics, all Esprits feature exclusive dual-speed, Helinear track focusers, which provide smooth, rock-solid focusing with zero image shift. Using a captain’s wheel design all focusers can be rotated, giving astrophotographers flexibility when framing their image.
As is customary, Sky-Watcher supplies everything you need to get out under the stars, including a 2-element field corrector, which guarantees a flat field across the entire imaging plane. All Esprit refractors also come with an 8x50 right angle finderscope, 2-inch star diagonal, M48 camera adapter, mounting hardware, and padded case.
SPECIFICATIONS
| 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 | 11 |
| Maximum Magnification | 157 |
| 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 |
SUPPORT DOCUMENTS
Manuals:
https://inter-static.skywatcher.com/upfiles/en_download_caty01410467945.pdf
About Sky-Watcher
Sky-Watcher was launched in 1999 featuring a modest line of Newtonian and refractor optical tubes, with distribution in Europe and Asia. In 2000, Sky-Watcher released their first series of Dobsonian telescopes, and two years later answered the rising popularity of digital SLRs with their first version of the famed German Equatorial Mount, the EQ6. Today, with a full product line that includes Dobsonians, APO refractors, EQ mounts, and photography products, Sky-Watcher has grown into the most popular telescope brand worldwide.