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URL: http://www.thaiexcite.com/Sky-Watcher-Quattro-150P-Imaging-Newtonian-6-includes-coma-corrector-reducer-.html
กล้องถ่ายดาว Sky-Watcher Quattro 150P Imaging Newtonian 6" (รวม Coma Corrector/Reducer แล้ว)
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กล้องถ่ายดาว Sky-Watcher Quattro 150P Imaging Newtonian 6" (รวม Coma Corrector/Reducer แล้ว)
- ทดสอบและรีวิวโดยนิตสารชื่อดัง Sky & Telescope magazine. ดู Test Report บับเต็มได้ที่นี่
- 150mm aperture, 600mm focal length
- Fast f/4 focal ratio
- Parabolic borosilicate mirrors utilizing Sky-Watcher’s proprietary Radiant ™ Aluminum Quartz (RAQ™) coatings designed for imaging with 94% reflectivity
- 11:1, dual-speed, 2-inch Crayford-style focuser
- Oversized secondary mirror produces greater illumination for full-frame DSLR and CCD cameras
- Primary and secondary mirrors are both collimatable
- Included coma corrector is designed to match the 600mm focal length, ideal for APS-C sensors and smaller
- Imaging focal ratio with included coma corrector/reducer is f/3.45, focal length is 518mm
- Includes tube rings, mounting plate, eyepiece adapters, 70° Ultra Wide 22mm eyepiece, coma corrector/reducer, and a 6x30 finderscope
"..Views with many premium eyepieces looked stunning, I can recommend the Quattro as a superb imaging system.." - Sky and Telescope Test Report
Click on image to view report.
The Quattro imaging Newtonian is an affordable, large aperture astrograph, ideal for users searching for a fast-imaging system that will work for both astrophotography and visual astronomy. Boasting a swift f/4 focal ratio, this astrograph can produce an exposure 6x faster than the average 8-inch f/10 Schmidt Cassegrain telescope (or 8.4x faster with the included coma corrector/reducer). Although designed as an imaging optical tube, these Newtonians also produce bright and detailed viewing for visual astronomy.
Like all Sky-Watcher reflectors, the Quattro Imaging Newtonian features borosilicate mirrors coated with Sky-Watcher’s proprietary Radiant ™ Aluminum Quartz (RAQ™) coatings, producing 94% reflectivity. The tube is constructed with rolled steel, then coated with Sky-Watcher’s signature glossy metal-flake Black Diamond finish. The OTA uses an oversized secondary mirror providing greater illumination for DSLRs and CCDs using full-frame sensors, and an included coma corrector/reducer for those who want to take their imaging to the next level.
Included with the Quattro Newtonian is a 11:1 dual-speed 2-inch Crayford-style focuser, 1.25 and 2-inch eyepiece adapters, a 6x30 finderscope, tube rings, V-style dovetail plate, a 70° Ultra Wide 22mm eyepiece, and coma corrector/reducer.
SPECIFICATIONS
| Optical Info | |
|---|---|
| Optical Design | Newtonian |
| Mirror Coatings | Protected Aluminum coatings with 94% reflectivity |
| Glass Type | Borosilicate |
| Primary Aperture (mm) | 150mm |
| F/Ratio | 3.9 |
| Focal Length (mm) | 600 |
| Secondary Diameter | 64mm |
| Secondary Obstruction (by diameter) | 42% |
| Secondary Obstruction by Area | 18% |
| Observational Info | |
| Dawes Limit | 0.77 |
| Rayleigh Limit | 0.93 |
| Limiting Mag. | 13.36 |
| Minimum Magnification | 21x |
| Maximum Magnification | 295x |
| Light Gathering (compared to next size down) | 40% (compared to 5" telescope) |
| General Info | |
| Focuser | 2" Dual Speed Crayford |
| OTA Length (Retract/Ext.) | 22" |
| OTA Outer Diameter | 7.25" |
| OTA Weight (with accessories) | 12.6 pounds |
| Accessories | |
| Included Finder | 6x30 Finder |
| Included Diagonal | No |
| Mounting Accessories | Mounting Rings/Dovetail |
| Included Eyepieces | 22mm 70 degree 1.25" |
| Included Case | No |
| Corrector | Yes |
SUPPORT DOCUMENTS
Manuals:
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Brochure:
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.