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88/41 Kanlapapruek Road, Bangkae, Bangkae, 10160, Bangkok, ประเทศไทย
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URL: http://www.thaiexcite.com/Sky-Watcher-Evolux-82ED-Black-Diamond-Apo-Refractor.html
กล้องถ่ายดาว Sky-Watcher Evolux 82ED Black Diamond Apo Refractor
รายละเอียด
รายละเอียด
กล้องถ่ายดาว Sky-Watcher Evolux 82ED Black Diamond Apo Refractor
- New ED doublet apochromatic optical design
- New lightweight, compact design perfect for wide field astrophotography
- New optical design featuring our proprietary Metallic High-Transmission Coatings™ (MHTC™)
- 82mm aperture
- 530mm focal length
- Fast f/6.45 focal ratio
- One ED element with matched optics
- Adjustable dew shield protects against stray light and condensation on the lens
- Clamshell mounting system with dual finderscope brackets
- 2.4-inch 11:1 precision dual-speed rack-and-pinion style focuser for better load capacity
- V-style dovetail fits most mounts
- Optional reducer/corrector (477mm at F/5.8)
- Hard case included for your travel or storage needs
Building on the foundation of the popular Evostar line of refractors, Sky-Watcher has developed the all new Evolux.
Designed for the savvy astrophotographer looking for a lightweight scope that still packs a punch with key upgrades in the optics and the mechanics, Evolux is a perfect fit for a widefield grab and go setup.
Sky-Watcher’s Evolux apochromatic doublet refractors are the perfect blend of superior extra-low dispersion glass and affordability. The lens assembly utilizes a proprietary combination of matched lenses, delivering tack-sharp stars with charcoal-black, contrast-rich skies.
All ED glass elements feature our proprietary Metallic High-Transmission Coatings™ (MHTC™), virtually eliminating all false color while the adjustable dew shield prevents stray light and condensation from affecting your photography.
Evolux comes in a foam-lined aluminum case with a 2.4-inch dual-speed rack-and-pinion-style focuser, dual finderscope brackets, a V-style dovetail, clamshell ring, adjustable dew shield, and the optional reducer/corrector.
SPECIFICATIONS
| Optical Info | |
|---|---|
| Optical Design | Apochromatic |
| Lens Coatings | Fully multi-coated |
| Lens Design | ED Doublet (Air Spaced) |
| Glass Type | ED Doublet |
| Optical Quality | Diffraction limited (1/4 wave) |
| Collimatable Cell | Yes (Push/Pull Cell) |
| Primary Aperture (mm) | 82 |
| F/Ratio | 6.45 |
| Focal Length (mm) | 530 |
| Observational Info | |
| Dawes Limit | 1.41 |
| Rayleigh Limit | 1.7 |
| Limiting Mag. | 12 |
| Minimum Magnification | 12x |
| Maximum Magnification | 161x |
| Light Gathering (compared to next size down) | 75% (compared to Evolux 62ED) |
| Mechanical Specifications | |
| Focuser | 2.4" Dual Speed (11:1) Rack & Pinion |
| Focuser: Rotatable? | No |
| Compression Ring | Yes |
| Retractable dew shield | Yes |
| OTA material | Aluminum |
| OTA Length (Retract/Ext.) | 16.375"/22.25" |
| Dew Shield diameter (mm) | 100mm |
| OTA Diameter | 90mm |
| OTA Weight (with accessories) | 6.5 lbs |
| Mounting rings | Yes |
| Dovetail type | V-style dovetail |
| Dovetail length | 6" |
| Optional Corrector/Reducer Specifications | |
| Corrector Name | Evolux 82ED 0.9x reducer kit |
| Optional Corrector/Reducer SKU | S20207 |
| Reduction (reducer only) | 0.9x |
| Corrector - insertable or thread-on | Thread-on |
| Corrector thread size | M56x1 female/M48 male |
| Corrector back focus | 55mm |
| Corrector illuminated field | 36mm |
| Includes one ED element | Yes |
| F/Ratio with reducer installed | 5.8 |
| Focal Length with reducer installed | 477mm |
| Corrector adapter needed? | Yes |
| Corrector allow for 2" filters? | No (Adapter included with reducer) |
| Accessories | |
| Eyepieces | No |
| Diagonal | No |
| Mounting Hardware | Clamshell/Dovetail |
| Camera Adapter | No |
| Flattener or Corrector | No |
| Collimation eyepiece | No |
| Finder | No |
| Case | Yes |
| Case Dimensions | 19.5" x 10.75" x 7.75" |
| Shipping Weight | 13.2 lbs. |
| Shipping Dimensions | 23" x 13" x 11" |
SUPPORT DOCUMENTS
Manuals: -
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.