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This is a 6" Quattro in excellent shape. The optics are clean; the body is in excellent shape. Only a few bite marks in the Vixen dovetail would let you know that this was used. The previous owner used this as a widefield visual scope; he didn't use this for astrophotography. Comes with all the stock items discussed in the original copy, below.
We do have the original box for this, so we can ship it to you.
- 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
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.
| 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 |