Sky-Watcher 130/650 primary mirror
Looking for a quality replacement for a worn or damaged mirror, or simply want to refresh the optics of your Newtonian reflector? The Sky-Watcher 130/650 parabolic primary mirror is exactly what you need. This is an original part from the well-established manufacturer Sky-Watcher, guaranteeing optical quality comparable to factory-fitted components - an ideal choice for demanding amateur astronomers and for those building or renovating their own telescope tube.
Parabolic profile - no spherical aberration
Unlike cheaper spherical mirrors, this mirror is ground to a parabolic profile that eliminates spherical aberration. This has a significant practical impact: stars across the entire field of view appear as sharp point sources of light, without the typical blurring at the edges of the image. At a focal ratio of f/5, a parabolic shape is an absolute necessity - a spherical mirror at this aperture ratio would show visible optical flaws even at the centre of the field. A parabolic mirror for a Newtonian reflector is therefore not just a technical detail, but the foundation of quality observation of planets, the Moon, and deep-sky objects.
Aperture and focal length
The 130 mm aperture provides a solid light-gathering surface for both visual observation and basic astrophotography. The 650 mm focal length offers a comfortable balance between field of view and magnification. With standard eyepieces in the 10-25 mm range, you will achieve magnifications of approximately 26x to 65x - ideal for surveying the Moon, planets in the solar system, and bright nebulae and star clusters.
| Parameter |
Value |
| Mirror type |
Parabolic primary mirror |
| Aperture |
130 mm |
| Focal length |
650 mm |
| Focal ratio |
f/5 |
| Compatible telescope type |
Newtonian reflector 130/650 |
| Manufacturer |
Sky-Watcher (original part) |
Who is this mirror for?
This mirror will be appreciated above all by those who own a Sky-Watcher telescope or another Newtonian tube with 130/650 mm parameters and need to replace the primary optics - whether due to damage, ageing of the reflective coating, or simply because they want to ensure the maximum performance of their instrument. It is also well suited for DIY astronomy enthusiasts who are building their own Newtonian reflector and are looking for a quality 130 mm primary mirror from a trusted manufacturer.
Tips for installation
When replacing the mirror, remember to collimate the entire optical system after installation. Precise alignment of both the primary and secondary mirror is essential for achieving full optical performance. A laser collimator or a simple Cheshire eyepiece can be used as a collimation tool.
About Sky-Watcher
Sky-Watcher is one of the world's most widespread manufacturers of astronomical optics and telescopes. The brand is known for its accessible pricing without compromise on the quality of key optical components. Original Sky-Watcher replacement parts are manufactured to the same specifications as those used in the production of complete telescopes, so with this mirror you have the assurance that your instrument will perform exactly as it was designed to.
